20650960

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{757}}^1$

素因数の和:812

約数の個数: 80

約数和(自身を含む): 54139392

約数和(自身を除く): 33488432

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 757, 880, 1240, 1364, 1514, 1705, 2480, 2728, 3028, 3410, 3785, 5456, 6056, 6820, 7570, 8327, 12112, 13640, 15140, 16654, 23467, 27280, 30280, 33308, 41635, 46934, 60560, 66616, 83270, 93868, 117335, 133232, 166540, 187736, 234670, 258137, 333080, 375472, 469340, 516274, 666160, 938680, 1032548, 1290685, 1877360, 2065096, 2581370, 4130192, 5162740, 10325480, 20650960]

約数ペア:

[(1, 20650960), (2, 10325480), (4, 5162740), (5, 4130192), (8, 2581370), (10, 2065096), (11, 1877360), (16, 1290685), (20, 1032548), (22, 938680), (31, 666160), (40, 516274), (44, 469340), (55, 375472), (62, 333080), (80, 258137), (88, 234670), (110, 187736), (124, 166540), (155, 133232), (176, 117335), (220, 93868), (248, 83270), (310, 66616), (341, 60560), (440, 46934), (496, 41635), (620, 33308), (682, 30280), (757, 27280), (880, 23467), (1240, 16654), (1364, 15140), (1514, 13640), (1705, 12112), (2480, 8327), (2728, 7570), (3028, 6820), (3410, 6056), (3785, 5456)]