28215275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 40711680

約数和(自身を除く): 12496405

約数列:

[1, 5, 11, 25, 37, 47, 55, 59, 185, 235, 275, 295, 407, 517, 649, 925, 1175, 1475, 1739, 2035, 2183, 2585, 2773, 3245, 8695, 10175, 10915, 12925, 13865, 16225, 19129, 24013, 30503, 43475, 54575, 69325, 95645, 102601, 120065, 152515, 478225, 513005, 600325, 762575, 1128611, 2565025, 5643055, 28215275]

約数ペア:

[(1, 28215275), (5, 5643055), (11, 2565025), (25, 1128611), (37, 762575), (47, 600325), (55, 513005), (59, 478225), (185, 152515), (235, 120065), (275, 102601), (295, 95645), (407, 69325), (517, 54575), (649, 43475), (925, 30503), (1175, 24013), (1475, 19129), (1739, 16225), (2035, 13865), (2183, 12925), (2585, 10915), (2773, 10175), (3245, 8695)]