20499955

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1063}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 10143245

約数列:

[1, 5, 7, 19, 29, 35, 95, 133, 145, 203, 551, 665, 1015, 1063, 2755, 3857, 5315, 7441, 19285, 20197, 30827, 37205, 100985, 141379, 154135, 215789, 585713, 706895, 1078945, 2928565, 4099991, 20499955]

約数ペア:

[(1, 20499955), (5, 4099991), (7, 2928565), (19, 1078945), (29, 706895), (35, 585713), (95, 215789), (133, 154135), (145, 141379), (203, 100985), (551, 37205), (665, 30827), (1015, 20197), (1063, 19285), (2755, 7441), (3857, 5315)]