220077680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{88741}}^1$

素因数の和:88785

約数の個数: 40

約数和(自身を含む): 528192384

約数和(自身を除く): 308114704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 88741, 177482, 354964, 443705, 709928, 887410, 1419856, 1774820, 2750971, 3549640, 5501942, 7099280, 11003884, 13754855, 22007768, 27509710, 44015536, 55019420, 110038840, 220077680]

約数ペア:

[(1, 220077680), (2, 110038840), (4, 55019420), (5, 44015536), (8, 27509710), (10, 22007768), (16, 13754855), (20, 11003884), (31, 7099280), (40, 5501942), (62, 3549640), (80, 2750971), (124, 1774820), (155, 1419856), (248, 887410), (310, 709928), (496, 443705), (620, 354964), (1240, 177482), (2480, 88741)]