21372290

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2161}}^1$

素因数の和:2234

約数の個数: 32

約数和(自身を含む): 41095296

約数和(自身を除く): 19723006

約数列:

[1, 2, 5, 10, 23, 43, 46, 86, 115, 215, 230, 430, 989, 1978, 2161, 4322, 4945, 9890, 10805, 21610, 49703, 92923, 99406, 185846, 248515, 464615, 497030, 929230, 2137229, 4274458, 10686145, 21372290]

約数ペア:

[(1, 21372290), (2, 10686145), (5, 4274458), (10, 2137229), (23, 929230), (43, 497030), (46, 464615), (86, 248515), (115, 185846), (215, 99406), (230, 92923), (430, 49703), (989, 21610), (1978, 10805), (2161, 9890), (4322, 4945)]