28757421

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2441}}^1$

素因数の和:2482

約数の個数: 48

約数和(自身を含む): 54857088

約数和(自身を除く): 26099667

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 119, 153, 187, 231, 357, 561, 693, 1071, 1309, 1683, 2441, 3927, 7323, 11781, 17087, 21969, 26851, 41497, 51261, 80553, 124491, 153783, 187957, 241659, 290479, 373473, 456467, 563871, 871437, 1369401, 1691613, 2614311, 3195269, 4108203, 9585807, 28757421]

約数ペア:

[(1, 28757421), (3, 9585807), (7, 4108203), (9, 3195269), (11, 2614311), (17, 1691613), (21, 1369401), (33, 871437), (51, 563871), (63, 456467), (77, 373473), (99, 290479), (119, 241659), (153, 187957), (187, 153783), (231, 124491), (357, 80553), (561, 51261), (693, 41497), (1071, 26851), (1309, 21969), (1683, 17087), (2441, 11781), (3927, 7323)]