20103980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77323}}^1$

素因数の和:77345

約数の個数: 24

約数和(自身を含む): 45466512

約数和(自身を除く): 25362532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77323, 154646, 309292, 386615, 773230, 1005199, 1546460, 2010398, 4020796, 5025995, 10051990, 20103980]

約数ペア:

[(1, 20103980), (2, 10051990), (4, 5025995), (5, 4020796), (10, 2010398), (13, 1546460), (20, 1005199), (26, 773230), (52, 386615), (65, 309292), (130, 154646), (260, 77323)]