28740257

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 8273503

約数列:

[1, 7, 13, 53, 59, 91, 101, 371, 413, 689, 707, 767, 1313, 3127, 4823, 5353, 5369, 5959, 9191, 21889, 37471, 40651, 41713, 69589, 77467, 284557, 315827, 487123, 542269, 2210789, 4105751, 28740257]

約数ペア:

[(1, 28740257), (7, 4105751), (13, 2210789), (53, 542269), (59, 487123), (91, 315827), (101, 284557), (371, 77467), (413, 69589), (689, 41713), (707, 40651), (767, 37471), (1313, 21889), (3127, 9191), (4823, 5959), (5353, 5369)]