21543705

素因数分解:

$3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{3011}}^1$

素因数の和:3078

約数の個数: 32

約数和(自身を含む): 39035520

約数和(自身を除く): 17491815

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 135, 159, 265, 477, 795, 1431, 2385, 3011, 7155, 9033, 15055, 27099, 45165, 81297, 135495, 159583, 406485, 478749, 797915, 1436247, 2393745, 4308741, 7181235, 21543705]

約数ペア:

[(1, 21543705), (3, 7181235), (5, 4308741), (9, 2393745), (15, 1436247), (27, 797915), (45, 478749), (53, 406485), (135, 159583), (159, 135495), (265, 81297), (477, 45165), (795, 27099), (1431, 15055), (2385, 9033), (3011, 7155)]