21906874

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 37195200

約数和(自身を除く): 15288326

約数列:

[1, 2, 11, 22, 41, 82, 149, 163, 298, 326, 451, 902, 1639, 1793, 3278, 3586, 6109, 6683, 12218, 13366, 24287, 48574, 67199, 73513, 134398, 147026, 267157, 534314, 995767, 1991534, 10953437, 21906874]

約数ペア:

[(1, 21906874), (2, 10953437), (11, 1991534), (22, 995767), (41, 534314), (82, 267157), (149, 147026), (163, 134398), (298, 73513), (326, 67199), (451, 48574), (902, 24287), (1639, 13366), (1793, 12218), (3278, 6683), (3586, 6109)]