20420236720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19634843}}^1$

素因数の和:19634869

約数の個数: 40

約数和(自身を含む): 51129133776

約数和(自身を除く): 30708897056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 19634843, 39269686, 78539372, 98174215, 157078744, 196348430, 255252959, 314157488, 392696860, 510505918, 785393720, 1021011836, 1276264795, 1570787440, 2042023672, 2552529590, 4084047344, 5105059180, 10210118360, 20420236720]

約数ペア:

[(1, 20420236720), (2, 10210118360), (4, 5105059180), (5, 4084047344), (8, 2552529590), (10, 2042023672), (13, 1570787440), (16, 1276264795), (20, 1021011836), (26, 785393720), (40, 510505918), (52, 392696860), (65, 314157488), (80, 255252959), (104, 196348430), (130, 157078744), (208, 98174215), (260, 78539372), (520, 39269686), (1040, 19634843)]