21418210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:631

約数の個数: 48

約数和(自身を含む): 43819776

約数和(自身を除く): 22401566

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 121, 155, 242, 310, 341, 571, 605, 682, 1142, 1210, 1705, 2855, 3410, 3751, 5710, 6281, 7502, 12562, 17701, 18755, 31405, 35402, 37510, 62810, 69091, 88505, 138182, 177010, 194711, 345455, 389422, 690910, 973555, 1947110, 2141821, 4283642, 10709105, 21418210]

約数ペア:

[(1, 21418210), (2, 10709105), (5, 4283642), (10, 2141821), (11, 1947110), (22, 973555), (31, 690910), (55, 389422), (62, 345455), (110, 194711), (121, 177010), (155, 138182), (242, 88505), (310, 69091), (341, 62810), (571, 37510), (605, 35402), (682, 31405), (1142, 18755), (1210, 17701), (1705, 12562), (2855, 7502), (3410, 6281), (3751, 5710)]