21025688

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{569}}^1$

素因数の和:755

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 20014312

約数列:

[1, 2, 4, 8, 31, 62, 124, 149, 248, 298, 569, 596, 1138, 1192, 2276, 4552, 4619, 9238, 17639, 18476, 35278, 36952, 70556, 84781, 141112, 169562, 339124, 678248, 2628211, 5256422, 10512844, 21025688]

約数ペア:

[(1, 21025688), (2, 10512844), (4, 5256422), (8, 2628211), (31, 678248), (62, 339124), (124, 169562), (149, 141112), (248, 84781), (298, 70556), (569, 36952), (596, 35278), (1138, 18476), (1192, 17639), (2276, 9238), (4552, 4619)]