21430760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41213}}^1$

素因数の和:41237

約数の個数: 32

約数和(自身を含む): 51929640

約数和(自身を除く): 30498880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41213, 82426, 164852, 206065, 329704, 412130, 535769, 824260, 1071538, 1648520, 2143076, 2678845, 4286152, 5357690, 10715380, 21430760]

約数ペア:

[(1, 21430760), (2, 10715380), (4, 5357690), (5, 4286152), (8, 2678845), (10, 2143076), (13, 1648520), (20, 1071538), (26, 824260), (40, 535769), (52, 412130), (65, 329704), (104, 206065), (130, 164852), (260, 82426), (520, 41213)]