20447728

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2311}}^1$

素因数の和:2405

約数の個数: 40

約数和(自身を含む): 45870080

約数和(自身を除く): 25422352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 158, 316, 553, 632, 1106, 1264, 2212, 2311, 4424, 4622, 8848, 9244, 16177, 18488, 32354, 36976, 64708, 129416, 182569, 258832, 365138, 730276, 1277983, 1460552, 2555966, 2921104, 5111932, 10223864, 20447728]

約数ペア:

[(1, 20447728), (2, 10223864), (4, 5111932), (7, 2921104), (8, 2555966), (14, 1460552), (16, 1277983), (28, 730276), (56, 365138), (79, 258832), (112, 182569), (158, 129416), (316, 64708), (553, 36976), (632, 32354), (1106, 18488), (1264, 16177), (2212, 9244), (2311, 8848), (4424, 4622)]