21660340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{367}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 49335552

約数和(自身を除く): 27675212

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 227, 260, 367, 454, 734, 908, 1135, 1468, 1835, 2270, 2951, 3670, 4540, 4771, 5902, 7340, 9542, 11804, 14755, 19084, 23855, 29510, 47710, 59020, 83309, 95420, 166618, 333236, 416545, 833090, 1083017, 1666180, 2166034, 4332068, 5415085, 10830170, 21660340]

約数ペア:

[(1, 21660340), (2, 10830170), (4, 5415085), (5, 4332068), (10, 2166034), (13, 1666180), (20, 1083017), (26, 833090), (52, 416545), (65, 333236), (130, 166618), (227, 95420), (260, 83309), (367, 59020), (454, 47710), (734, 29510), (908, 23855), (1135, 19084), (1468, 14755), (1835, 11804), (2270, 9542), (2951, 7340), (3670, 5902), (4540, 4771)]