21356710

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 39497472

約数和(自身を除く): 18140762

約数列:

[1, 2, 5, 10, 61, 122, 157, 223, 305, 314, 446, 610, 785, 1115, 1570, 2230, 9577, 13603, 19154, 27206, 35011, 47885, 68015, 70022, 95770, 136030, 175055, 350110, 2135671, 4271342, 10678355, 21356710]

約数ペア:

[(1, 21356710), (2, 10678355), (5, 4271342), (10, 2135671), (61, 350110), (122, 175055), (157, 136030), (223, 95770), (305, 70022), (314, 68015), (446, 47885), (610, 35011), (785, 27206), (1115, 19154), (1570, 13603), (2230, 9577)]