21821470

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198377}}^1$

素因数の和:198395

約数の個数: 16

約数和(自身を含む): 42849648

約数和(自身を除く): 21028178

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198377, 396754, 991885, 1983770, 2182147, 4364294, 10910735, 21821470]

約数ペア:

[(1, 21821470), (2, 10910735), (5, 4364294), (10, 2182147), (11, 1983770), (22, 991885), (55, 396754), (110, 198377)]