20299240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 49795200

約数和(自身を除く): 29495960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 103, 104, 130, 206, 260, 379, 412, 515, 520, 758, 824, 1030, 1339, 1516, 1895, 2060, 2678, 3032, 3790, 4120, 4927, 5356, 6695, 7580, 9854, 10712, 13390, 15160, 19708, 24635, 26780, 39037, 39416, 49270, 53560, 78074, 98540, 156148, 195185, 197080, 312296, 390370, 507481, 780740, 1014962, 1561480, 2029924, 2537405, 4059848, 5074810, 10149620, 20299240]

約数ペア:

[(1, 20299240), (2, 10149620), (4, 5074810), (5, 4059848), (8, 2537405), (10, 2029924), (13, 1561480), (20, 1014962), (26, 780740), (40, 507481), (52, 390370), (65, 312296), (103, 197080), (104, 195185), (130, 156148), (206, 98540), (260, 78074), (379, 53560), (412, 49270), (515, 39416), (520, 39037), (758, 26780), (824, 24635), (1030, 19708), (1339, 15160), (1516, 13390), (1895, 10712), (2060, 9854), (2678, 7580), (3032, 6695), (3790, 5356), (4120, 4927)]