21696920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77489}}^1$

素因数の和:77507

約数の個数: 32

約数和(自身を含む): 55792800

約数和(自身を除く): 34095880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77489, 154978, 309956, 387445, 542423, 619912, 774890, 1084846, 1549780, 2169692, 2712115, 3099560, 4339384, 5424230, 10848460, 21696920]

約数ペア:

[(1, 21696920), (2, 10848460), (4, 5424230), (5, 4339384), (7, 3099560), (8, 2712115), (10, 2169692), (14, 1549780), (20, 1084846), (28, 774890), (35, 619912), (40, 542423), (56, 387445), (70, 309956), (140, 154978), (280, 77489)]