1285681940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{51551}}^1$

素因数の和:51632

約数の個数: 48

約数和(自身を含む): 2858042880

約数和(自身を除く): 1572360940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 1247, 2494, 4988, 6235, 12470, 24940, 51551, 103102, 206204, 257755, 515510, 1031020, 1494979, 2216693, 2989958, 4433386, 5979916, 7474895, 8866772, 11083465, 14949790, 22166930, 29899580, 44333860, 64284097, 128568194, 257136388, 321420485, 642840970, 1285681940]

約数ペア:

[(1, 1285681940), (2, 642840970), (4, 321420485), (5, 257136388), (10, 128568194), (20, 64284097), (29, 44333860), (43, 29899580), (58, 22166930), (86, 14949790), (116, 11083465), (145, 8866772), (172, 7474895), (215, 5979916), (290, 4433386), (430, 2989958), (580, 2216693), (860, 1494979), (1247, 1031020), (2494, 515510), (4988, 257755), (6235, 206204), (12470, 103102), (24940, 51551)]