128127987

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:745

約数の個数: 40

約数和(自身を含む): 207345600

約数和(自身を除く): 79217613

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 271, 351, 449, 813, 1053, 1347, 2439, 3523, 4041, 5837, 7317, 10569, 12123, 17511, 21951, 31707, 36369, 52533, 95121, 121679, 157599, 285363, 365037, 472797, 1095111, 1581827, 3285333, 4745481, 9855999, 14236443, 42709329, 128127987]

約数ペア:

[(1, 128127987), (3, 42709329), (9, 14236443), (13, 9855999), (27, 4745481), (39, 3285333), (81, 1581827), (117, 1095111), (271, 472797), (351, 365037), (449, 285363), (813, 157599), (1053, 121679), (1347, 95121), (2439, 52533), (3523, 36369), (4041, 31707), (5837, 21951), (7317, 17511), (10569, 12123)]