21860440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{773}}^1$

素因数の和:892

約数の個数: 64

約数和(自身を含む): 56842560

約数和(自身を除く): 34982120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 101, 140, 202, 280, 404, 505, 707, 773, 808, 1010, 1414, 1546, 2020, 2828, 3092, 3535, 3865, 4040, 5411, 5656, 6184, 7070, 7730, 10822, 14140, 15460, 21644, 27055, 28280, 30920, 43288, 54110, 78073, 108220, 156146, 216440, 312292, 390365, 546511, 624584, 780730, 1093022, 1561460, 2186044, 2732555, 3122920, 4372088, 5465110, 10930220, 21860440]

約数ペア:

[(1, 21860440), (2, 10930220), (4, 5465110), (5, 4372088), (7, 3122920), (8, 2732555), (10, 2186044), (14, 1561460), (20, 1093022), (28, 780730), (35, 624584), (40, 546511), (56, 390365), (70, 312292), (101, 216440), (140, 156146), (202, 108220), (280, 78073), (404, 54110), (505, 43288), (707, 30920), (773, 28280), (808, 27055), (1010, 21644), (1414, 15460), (1546, 14140), (2020, 10822), (2828, 7730), (3092, 7070), (3535, 6184), (3865, 5656), (4040, 5411)]