20438992

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{4451}}^1$

素因数の和:4507

約数の個数: 40

約数和(自身を含む): 46372032

約数和(自身を除く): 25933040

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4451, 4592, 8902, 17804, 31157, 35608, 62314, 71216, 124628, 182491, 249256, 364982, 498512, 729964, 1277437, 1459928, 2554874, 2919856, 5109748, 10219496, 20438992]

約数ペア:

[(1, 20438992), (2, 10219496), (4, 5109748), (7, 2919856), (8, 2554874), (14, 1459928), (16, 1277437), (28, 729964), (41, 498512), (56, 364982), (82, 249256), (112, 182491), (164, 124628), (287, 71216), (328, 62314), (574, 35608), (656, 31157), (1148, 17804), (2296, 8902), (4451, 4592)]