2820740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{571}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 6726720

約数和(自身を除く): 3905980

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 571, 988, 1142, 1235, 2284, 2470, 2855, 4940, 5710, 7423, 10849, 11420, 14846, 21698, 29692, 37115, 43396, 54245, 74230, 108490, 141037, 148460, 216980, 282074, 564148, 705185, 1410370, 2820740]

約数ペア:

[(1, 2820740), (2, 1410370), (4, 705185), (5, 564148), (10, 282074), (13, 216980), (19, 148460), (20, 141037), (26, 108490), (38, 74230), (52, 54245), (65, 43396), (76, 37115), (95, 29692), (130, 21698), (190, 14846), (247, 11420), (260, 10849), (380, 7423), (494, 5710), (571, 4940), (988, 2855), (1142, 2470), (1235, 2284)]