21217586

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 35562240

約数和(自身を除く): 14344654

約数列:

[1, 2, 13, 26, 47, 94, 97, 179, 194, 358, 611, 1222, 1261, 2327, 2522, 4559, 4654, 8413, 9118, 16826, 17363, 34726, 59267, 109369, 118534, 218738, 225719, 451438, 816061, 1632122, 10608793, 21217586]

約数ペア:

[(1, 21217586), (2, 10608793), (13, 1632122), (26, 816061), (47, 451438), (94, 225719), (97, 218738), (179, 118534), (194, 109369), (358, 59267), (611, 34726), (1222, 17363), (1261, 16826), (2327, 9118), (2522, 8413), (4559, 4654)]