2920818920

素因数分解:

$2^3\times 5^1\times {\mathrm{1607}}^1\times {\mathrm{45439}}^1$

素因数の和:47057

約数の個数: 32

約数和(自身を含む): 6576076800

約数和(自身を除く): 3655257880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1607, 3214, 6428, 8035, 12856, 16070, 32140, 45439, 64280, 90878, 181756, 227195, 363512, 454390, 908780, 1817560, 73020473, 146040946, 292081892, 365102365, 584163784, 730204730, 1460409460, 2920818920]

約数ペア:

[(1, 2920818920), (2, 1460409460), (4, 730204730), (5, 584163784), (8, 365102365), (10, 292081892), (20, 146040946), (40, 73020473), (1607, 1817560), (3214, 908780), (6428, 454390), (8035, 363512), (12856, 227195), (16070, 181756), (32140, 90878), (45439, 64280)]