870408880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{13931}}^1$

素因数の和:14026

約数の個数: 80

約数和(自身を含む): 2238928128

約数和(自身を除く): 1368519248

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1420, 1562, 2840, 3124, 3905, 5680, 6248, 7810, 12496, 13931, 15620, 27862, 31240, 55724, 62480, 69655, 111448, 139310, 153241, 222896, 278620, 306482, 557240, 612964, 766205, 989101, 1114480, 1225928, 1532410, 1978202, 2451856, 3064820, 3956404, 4945505, 6129640, 7912808, 9891010, 10880111, 12259280, 15825616, 19782020, 21760222, 39564040, 43520444, 54400555, 79128080, 87040888, 108801110, 174081776, 217602220, 435204440, 870408880]

約数ペア:

[(1, 870408880), (2, 435204440), (4, 217602220), (5, 174081776), (8, 108801110), (10, 87040888), (11, 79128080), (16, 54400555), (20, 43520444), (22, 39564040), (40, 21760222), (44, 19782020), (55, 15825616), (71, 12259280), (80, 10880111), (88, 9891010), (110, 7912808), (142, 6129640), (176, 4945505), (220, 3956404), (284, 3064820), (355, 2451856), (440, 1978202), (568, 1532410), (710, 1225928), (781, 1114480), (880, 989101), (1136, 766205), (1420, 612964), (1562, 557240), (2840, 306482), (3124, 278620), (3905, 222896), (5680, 153241), (6248, 139310), (7810, 111448), (12496, 69655), (13931, 62480), (15620, 55724), (27862, 31240)]