21721427440

素因数分解:

$2^4\times 5^1\times {\mathrm{271517843}}^1$

素因数の和:271517856

約数の個数: 20

約数和(自身を含む): 50502318984

約数和(自身を除く): 28780891544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271517843, 543035686, 1086071372, 1357589215, 2172142744, 2715178430, 4344285488, 5430356860, 10860713720, 21721427440]

約数ペア:

[(1, 21721427440), (2, 10860713720), (4, 5430356860), (5, 4344285488), (8, 2715178430), (10, 2172142744), (16, 1357589215), (20, 1086071372), (40, 543035686), (80, 271517843)]