21980630

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{3109}}^1$

素因数の和:3224

約数の個数: 32

約数和(自身を含む): 45679680

約数和(自身を除く): 23699050

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 101, 202, 505, 707, 1010, 1414, 3109, 3535, 6218, 7070, 15545, 21763, 31090, 43526, 108815, 217630, 314009, 628018, 1570045, 2198063, 3140090, 4396126, 10990315, 21980630]

約数ペア:

[(1, 21980630), (2, 10990315), (5, 4396126), (7, 3140090), (10, 2198063), (14, 1570045), (35, 628018), (70, 314009), (101, 217630), (202, 108815), (505, 43526), (707, 31090), (1010, 21763), (1414, 15545), (3109, 7070), (3535, 6218)]