20028295

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{821}}^1$

素因数の和:891

約数の個数: 32

約数和(自身を含む): 29828736

約数和(自身を除く): 9800441

約数列:

[1, 5, 7, 17, 35, 41, 85, 119, 205, 287, 595, 697, 821, 1435, 3485, 4105, 4879, 5747, 13957, 24395, 28735, 33661, 69785, 97699, 168305, 235627, 488495, 572237, 1178135, 2861185, 4005659, 20028295]

約数ペア:

[(1, 20028295), (5, 4005659), (7, 2861185), (17, 1178135), (35, 572237), (41, 488495), (85, 235627), (119, 168305), (205, 97699), (287, 69785), (595, 33661), (697, 28735), (821, 24395), (1435, 13957), (3485, 5747), (4105, 4879)]