21497320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41341}}^1$

素因数の和:41365

約数の個数: 32

約数和(自身を含む): 52090920

約数和(自身を除く): 30593600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41341, 82682, 165364, 206705, 330728, 413410, 537433, 826820, 1074866, 1653640, 2149732, 2687165, 4299464, 5374330, 10748660, 21497320]

約数ペア:

[(1, 21497320), (2, 10748660), (4, 5374330), (5, 4299464), (8, 2687165), (10, 2149732), (13, 1653640), (20, 1074866), (26, 826820), (40, 537433), (52, 413410), (65, 330728), (104, 206705), (130, 165364), (260, 82682), (520, 41341)]