21609770

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23747}}^1$

素因数の和:23774

約数の個数: 32

約数和(自身を含む): 47875968

約数和(自身を除く): 26266198

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 23747, 47494, 118735, 166229, 237470, 308711, 332458, 617422, 831145, 1543555, 1662290, 2160977, 3087110, 4321954, 10804885, 21609770]

約数ペア:

[(1, 21609770), (2, 10804885), (5, 4321954), (7, 3087110), (10, 2160977), (13, 1662290), (14, 1543555), (26, 831145), (35, 617422), (65, 332458), (70, 308711), (91, 237470), (130, 166229), (182, 118735), (455, 47494), (910, 23747)]