21054638

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 36292320

約数和(自身を除く): 15237682

約数列:

[1, 2, 11, 22, 29, 58, 61, 122, 319, 541, 638, 671, 1082, 1342, 1769, 3538, 5951, 11902, 15689, 19459, 31378, 33001, 38918, 66002, 172579, 345158, 363011, 726022, 957029, 1914058, 10527319, 21054638]

約数ペア:

[(1, 21054638), (2, 10527319), (11, 1914058), (22, 957029), (29, 726022), (58, 363011), (61, 345158), (122, 172579), (319, 66002), (541, 38918), (638, 33001), (671, 31378), (1082, 19459), (1342, 15689), (1769, 11902), (3538, 5951)]