87247640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1104

約数の個数: 64

約数和(自身を含む): 205701120

約数和(自身を除く): 118453480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 71, 124, 142, 155, 248, 284, 310, 355, 568, 620, 710, 991, 1240, 1420, 1982, 2201, 2840, 3964, 4402, 4955, 7928, 8804, 9910, 11005, 17608, 19820, 22010, 30721, 39640, 44020, 61442, 70361, 88040, 122884, 140722, 153605, 245768, 281444, 307210, 351805, 562888, 614420, 703610, 1228840, 1407220, 2181191, 2814440, 4362382, 8724764, 10905955, 17449528, 21811910, 43623820, 87247640]

約数ペア:

[(1, 87247640), (2, 43623820), (4, 21811910), (5, 17449528), (8, 10905955), (10, 8724764), (20, 4362382), (31, 2814440), (40, 2181191), (62, 1407220), (71, 1228840), (124, 703610), (142, 614420), (155, 562888), (248, 351805), (284, 307210), (310, 281444), (355, 245768), (568, 153605), (620, 140722), (710, 122884), (991, 88040), (1240, 70361), (1420, 61442), (1982, 44020), (2201, 39640), (2840, 30721), (3964, 22010), (4402, 19820), (4955, 17608), (7928, 11005), (8804, 9910)]