20379320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39191}}^1$

素因数の和:39215

約数の個数: 32

約数和(自身を含む): 49381920

約数和(自身を除く): 29002600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39191, 78382, 156764, 195955, 313528, 391910, 509483, 783820, 1018966, 1567640, 2037932, 2547415, 4075864, 5094830, 10189660, 20379320]

約数ペア:

[(1, 20379320), (2, 10189660), (4, 5094830), (5, 4075864), (8, 2547415), (10, 2037932), (13, 1567640), (20, 1018966), (26, 783820), (40, 509483), (52, 391910), (65, 313528), (104, 195955), (130, 156764), (260, 78382), (520, 39191)]