405966080

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:852

約数の個数: 144

約数和(自身を含む): 1082371584

約数和(自身を除く): 676405504

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 256, 260, 310, 320, 403, 416, 496, 520, 620, 640, 787, 806, 832, 992, 1040, 1240, 1280, 1574, 1612, 1664, 1984, 2015, 2080, 2480, 3148, 3224, 3328, 3935, 3968, 4030, 4160, 4960, 6296, 6448, 7870, 7936, 8060, 8320, 9920, 10231, 12592, 12896, 15740, 16120, 16640, 19840, 20462, 24397, 25184, 25792, 31480, 32240, 39680, 40924, 48794, 50368, 51155, 51584, 62960, 64480, 81848, 97588, 100736, 102310, 103168, 121985, 125920, 128960, 163696, 195176, 201472, 204620, 243970, 251840, 257920, 317161, 327392, 390352, 409240, 487940, 503680, 515840, 634322, 654784, 780704, 818480, 975880, 1007360, 1268644, 1309568, 1561408, 1585805, 1636960, 1951760, 2537288, 2619136, 3122816, 3171610, 3273920, 3903520, 5074576, 6245632, 6343220, 6547840, 7807040, 10149152, 12686440, 13095680, 15614080, 20298304, 25372880, 31228160, 40596608, 50745760, 81193216, 101491520, 202983040, 405966080]

約数ペア:

[(1, 405966080), (2, 202983040), (4, 101491520), (5, 81193216), (8, 50745760), (10, 40596608), (13, 31228160), (16, 25372880), (20, 20298304), (26, 15614080), (31, 13095680), (32, 12686440), (40, 10149152), (52, 7807040), (62, 6547840), (64, 6343220), (65, 6245632), (80, 5074576), (104, 3903520), (124, 3273920), (128, 3171610), (130, 3122816), (155, 2619136), (160, 2537288), (208, 1951760), (248, 1636960), (256, 1585805), (260, 1561408), (310, 1309568), (320, 1268644), (403, 1007360), (416, 975880), (496, 818480), (520, 780704), (620, 654784), (640, 634322), (787, 515840), (806, 503680), (832, 487940), (992, 409240), (1040, 390352), (1240, 327392), (1280, 317161), (1574, 257920), (1612, 251840), (1664, 243970), (1984, 204620), (2015, 201472), (2080, 195176), (2480, 163696), (3148, 128960), (3224, 125920), (3328, 121985), (3935, 103168), (3968, 102310), (4030, 100736), (4160, 97588), (4960, 81848), (6296, 64480), (6448, 62960), (7870, 51584), (7936, 51155), (8060, 50368), (8320, 48794), (9920, 40924), (10231, 39680), (12592, 32240), (12896, 31480), (15740, 25792), (16120, 25184), (16640, 24397), (19840, 20462)]