20309397485

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{636359}}^1$

素因数の和:636868

約数の個数: 16

約数和(自身を含む): 26299486080

約数和(自身を除く): 5990088595

約数列:

[1, 5, 13, 65, 491, 2455, 6383, 31915, 636359, 3181795, 8272667, 41363335, 312452269, 1562261345, 4061879497, 20309397485]

約数ペア:

[(1, 20309397485), (5, 4061879497), (13, 1562261345), (65, 312452269), (491, 41363335), (2455, 8272667), (6383, 3181795), (31915, 636359)]