17990512

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{331}}^1$

素因数の和:461

約数の個数: 40

約数和(自身を含む): 36227840

約数和(自身を除く): 18237328

約数列:

[1, 2, 4, 8, 16, 43, 79, 86, 158, 172, 316, 331, 344, 632, 662, 688, 1264, 1324, 2648, 3397, 5296, 6794, 13588, 14233, 26149, 27176, 28466, 52298, 54352, 56932, 104596, 113864, 209192, 227728, 418384, 1124407, 2248814, 4497628, 8995256, 17990512]

約数ペア:

[(1, 17990512), (2, 8995256), (4, 4497628), (8, 2248814), (16, 1124407), (43, 418384), (79, 227728), (86, 209192), (158, 113864), (172, 104596), (316, 56932), (331, 54352), (344, 52298), (632, 28466), (662, 27176), (688, 26149), (1264, 14233), (1324, 13588), (2648, 6794), (3397, 5296)]