20316520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72559}}^1$

素因数の和:72577

約数の個数: 32

約数和(自身を含む): 52243200

約数和(自身を除く): 31926680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72559, 145118, 290236, 362795, 507913, 580472, 725590, 1015826, 1451180, 2031652, 2539565, 2902360, 4063304, 5079130, 10158260, 20316520]

約数ペア:

[(1, 20316520), (2, 10158260), (4, 5079130), (5, 4063304), (7, 2902360), (8, 2539565), (10, 2031652), (14, 1451180), (20, 1015826), (28, 725590), (35, 580472), (40, 507913), (56, 362795), (70, 290236), (140, 145118), (280, 72559)]