51238719

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 87692800

約数和(自身を除く): 36454081

約数列:

[1, 3, 7, 9, 21, 61, 63, 67, 183, 199, 201, 427, 469, 549, 597, 603, 1281, 1393, 1407, 1791, 3843, 4087, 4179, 4221, 12139, 12261, 12537, 13333, 28609, 36417, 36783, 39999, 84973, 85827, 93331, 109251, 119997, 254919, 257481, 279993, 764757, 813313, 839979, 2439939, 5693191, 7319817, 17079573, 51238719]

約数ペア:

[(1, 51238719), (3, 17079573), (7, 7319817), (9, 5693191), (21, 2439939), (61, 839979), (63, 813313), (67, 764757), (183, 279993), (199, 257481), (201, 254919), (427, 119997), (469, 109251), (549, 93331), (597, 85827), (603, 84973), (1281, 39999), (1393, 36783), (1407, 36417), (1791, 28609), (3843, 13333), (4087, 12537), (4179, 12261), (4221, 12139)]