855423920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:240

約数の個数: 160

約数和(自身を含む): 2238190080

約数和(自身を除く): 1382766160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 157, 169, 208, 248, 260, 310, 314, 338, 403, 496, 520, 620, 628, 676, 785, 806, 845, 1040, 1240, 1256, 1352, 1570, 1612, 1690, 2015, 2041, 2197, 2480, 2512, 2704, 3140, 3224, 3380, 4030, 4082, 4394, 4867, 5239, 6280, 6448, 6760, 8060, 8164, 8788, 9734, 10205, 10478, 10985, 12560, 13520, 16120, 16328, 17576, 19468, 20410, 20956, 21970, 24335, 26195, 26533, 32240, 32656, 35152, 38936, 40820, 41912, 43940, 48670, 52390, 53066, 63271, 68107, 77872, 81640, 83824, 87880, 97340, 104780, 106132, 126542, 132665, 136214, 163280, 175760, 194680, 209560, 212264, 253084, 265330, 272428, 316355, 340535, 344929, 389360, 419120, 424528, 506168, 530660, 544856, 632710, 681070, 689858, 822523, 1012336, 1061320, 1089712, 1265420, 1362140, 1379716, 1645046, 1724645, 2122640, 2530840, 2724280, 2759432, 3290092, 3449290, 4112615, 5061680, 5448560, 5518864, 6580184, 6898580, 8225230, 10692799, 13160368, 13797160, 16450460, 21385598, 27594320, 32900920, 42771196, 53463995, 65801840, 85542392, 106927990, 171084784, 213855980, 427711960, 855423920]

約数ペア:

[(1, 855423920), (2, 427711960), (4, 213855980), (5, 171084784), (8, 106927990), (10, 85542392), (13, 65801840), (16, 53463995), (20, 42771196), (26, 32900920), (31, 27594320), (40, 21385598), (52, 16450460), (62, 13797160), (65, 13160368), (80, 10692799), (104, 8225230), (124, 6898580), (130, 6580184), (155, 5518864), (157, 5448560), (169, 5061680), (208, 4112615), (248, 3449290), (260, 3290092), (310, 2759432), (314, 2724280), (338, 2530840), (403, 2122640), (496, 1724645), (520, 1645046), (620, 1379716), (628, 1362140), (676, 1265420), (785, 1089712), (806, 1061320), (845, 1012336), (1040, 822523), (1240, 689858), (1256, 681070), (1352, 632710), (1570, 544856), (1612, 530660), (1690, 506168), (2015, 424528), (2041, 419120), (2197, 389360), (2480, 344929), (2512, 340535), (2704, 316355), (3140, 272428), (3224, 265330), (3380, 253084), (4030, 212264), (4082, 209560), (4394, 194680), (4867, 175760), (5239, 163280), (6280, 136214), (6448, 132665), (6760, 126542), (8060, 106132), (8164, 104780), (8788, 97340), (9734, 87880), (10205, 83824), (10478, 81640), (10985, 77872), (12560, 68107), (13520, 63271), (16120, 53066), (16328, 52390), (17576, 48670), (19468, 43940), (20410, 41912), (20956, 40820), (21970, 38936), (24335, 35152), (26195, 32656), (26533, 32240)]