721086860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{145969}}^1$

素因数の和:146010

約数の個数: 48

約数和(自身を含む): 1716607200

約数和(自身を除く): 995520340

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 145969, 291938, 583876, 729845, 1459690, 1897597, 2773411, 2919380, 3795194, 5546822, 7590388, 9487985, 11093644, 13867055, 18975970, 27734110, 36054343, 37951940, 55468220, 72108686, 144217372, 180271715, 360543430, 721086860]

約数ペア:

[(1, 721086860), (2, 360543430), (4, 180271715), (5, 144217372), (10, 72108686), (13, 55468220), (19, 37951940), (20, 36054343), (26, 27734110), (38, 18975970), (52, 13867055), (65, 11093644), (76, 9487985), (95, 7590388), (130, 5546822), (190, 3795194), (247, 2919380), (260, 2773411), (380, 1897597), (494, 1459690), (988, 729845), (1235, 583876), (2470, 291938), (4940, 145969)]