81728400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{13}}^3\times {\mathrm{31}}^1$

素因数の和:91

約数の個数: 240

約数和(自身を含む): 292759040

約数和(自身を除く): 211030640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 31, 39, 40, 48, 50, 52, 60, 62, 65, 75, 78, 80, 93, 100, 104, 120, 124, 130, 150, 155, 156, 169, 186, 195, 200, 208, 240, 248, 260, 300, 310, 312, 325, 338, 372, 390, 400, 403, 465, 496, 507, 520, 600, 620, 624, 650, 676, 744, 775, 780, 806, 845, 930, 975, 1014, 1040, 1200, 1209, 1240, 1300, 1352, 1488, 1550, 1560, 1612, 1690, 1860, 1950, 2015, 2028, 2197, 2325, 2418, 2480, 2535, 2600, 2704, 3100, 3120, 3224, 3380, 3720, 3900, 4030, 4056, 4225, 4394, 4650, 4836, 5070, 5200, 5239, 6045, 6200, 6448, 6591, 6760, 7440, 7800, 8060, 8112, 8450, 8788, 9300, 9672, 10075, 10140, 10478, 10985, 12090, 12400, 12675, 13182, 13520, 15600, 15717, 16120, 16900, 17576, 18600, 19344, 20150, 20280, 20956, 21970, 24180, 25350, 26195, 26364, 30225, 31434, 32240, 32955, 33800, 35152, 37200, 40300, 40560, 41912, 43940, 48360, 50700, 52390, 52728, 54925, 60450, 62868, 65910, 67600, 68107, 78585, 80600, 83824, 87880, 96720, 101400, 104780, 105456, 109850, 120900, 125736, 130975, 131820, 136214, 157170, 161200, 164775, 175760, 202800, 204321, 209560, 219700, 241800, 251472, 261950, 263640, 272428, 314340, 329550, 340535, 392925, 408642, 419120, 439400, 483600, 523900, 527280, 544856, 628680, 659100, 681070, 785850, 817284, 878800, 1021605, 1047800, 1089712, 1257360, 1318200, 1362140, 1571700, 1634568, 1702675, 2043210, 2095600, 2636400, 2724280, 3143400, 3269136, 3405350, 4086420, 5108025, 5448560, 6286800, 6810700, 8172840, 10216050, 13621400, 16345680, 20432100, 27242800, 40864200, 81728400]

約数ペア:

[(1, 81728400), (2, 40864200), (3, 27242800), (4, 20432100), (5, 16345680), (6, 13621400), (8, 10216050), (10, 8172840), (12, 6810700), (13, 6286800), (15, 5448560), (16, 5108025), (20, 4086420), (24, 3405350), (25, 3269136), (26, 3143400), (30, 2724280), (31, 2636400), (39, 2095600), (40, 2043210), (48, 1702675), (50, 1634568), (52, 1571700), (60, 1362140), (62, 1318200), (65, 1257360), (75, 1089712), (78, 1047800), (80, 1021605), (93, 878800), (100, 817284), (104, 785850), (120, 681070), (124, 659100), (130, 628680), (150, 544856), (155, 527280), (156, 523900), (169, 483600), (186, 439400), (195, 419120), (200, 408642), (208, 392925), (240, 340535), (248, 329550), (260, 314340), (300, 272428), (310, 263640), (312, 261950), (325, 251472), (338, 241800), (372, 219700), (390, 209560), (400, 204321), (403, 202800), (465, 175760), (496, 164775), (507, 161200), (520, 157170), (600, 136214), (620, 131820), (624, 130975), (650, 125736), (676, 120900), (744, 109850), (775, 105456), (780, 104780), (806, 101400), (845, 96720), (930, 87880), (975, 83824), (1014, 80600), (1040, 78585), (1200, 68107), (1209, 67600), (1240, 65910), (1300, 62868), (1352, 60450), (1488, 54925), (1550, 52728), (1560, 52390), (1612, 50700), (1690, 48360), (1860, 43940), (1950, 41912), (2015, 40560), (2028, 40300), (2197, 37200), (2325, 35152), (2418, 33800), (2480, 32955), (2535, 32240), (2600, 31434), (2704, 30225), (3100, 26364), (3120, 26195), (3224, 25350), (3380, 24180), (3720, 21970), (3900, 20956), (4030, 20280), (4056, 20150), (4225, 19344), (4394, 18600), (4650, 17576), (4836, 16900), (5070, 16120), (5200, 15717), (5239, 15600), (6045, 13520), (6200, 13182), (6448, 12675), (6591, 12400), (6760, 12090), (7440, 10985), (7800, 10478), (8060, 10140), (8112, 10075), (8450, 9672), (8788, 9300)]