68629880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2557}}^1$

素因数の和:2640

約数の個数: 64

約数和(自身を含む): 171283680

約数和(自身を除く): 102653800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2557, 2684, 3355, 5114, 5368, 6710, 10228, 12785, 13420, 20456, 25570, 26840, 28127, 51140, 56254, 102280, 112508, 140635, 155977, 225016, 281270, 311954, 562540, 623908, 779885, 1125080, 1247816, 1559770, 1715747, 3119540, 3431494, 6239080, 6862988, 8578735, 13725976, 17157470, 34314940, 68629880]

約数ペア:

[(1, 68629880), (2, 34314940), (4, 17157470), (5, 13725976), (8, 8578735), (10, 6862988), (11, 6239080), (20, 3431494), (22, 3119540), (40, 1715747), (44, 1559770), (55, 1247816), (61, 1125080), (88, 779885), (110, 623908), (122, 562540), (220, 311954), (244, 281270), (305, 225016), (440, 155977), (488, 140635), (610, 112508), (671, 102280), (1220, 56254), (1342, 51140), (2440, 28127), (2557, 26840), (2684, 25570), (3355, 20456), (5114, 13420), (5368, 12785), (6710, 10228)]