20281196

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{4937}}^1$

素因数の和:5033

約数の個数: 24

約数和(自身を含む): 38713920

約数和(自身を除く): 18432724

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 316, 1027, 2054, 4108, 4937, 9874, 19748, 64181, 128362, 256724, 390023, 780046, 1560092, 5070299, 10140598, 20281196]

約数ペア:

[(1, 20281196), (2, 10140598), (4, 5070299), (13, 1560092), (26, 780046), (52, 390023), (79, 256724), (158, 128362), (316, 64181), (1027, 19748), (2054, 9874), (4108, 4937)]