31379985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:207

約数の個数: 96

約数和(自身を含む): 68490240

約数和(自身を除く): 37110255

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 79, 91, 97, 105, 117, 195, 237, 273, 291, 315, 395, 455, 485, 553, 585, 679, 711, 819, 873, 1027, 1185, 1261, 1365, 1455, 1659, 2037, 2765, 3081, 3395, 3555, 3783, 4095, 4365, 4977, 5135, 6111, 6305, 7189, 7663, 8295, 8827, 9243, 10185, 11349, 15405, 18915, 21567, 22989, 24885, 26481, 30555, 35945, 38315, 44135, 46215, 53641, 56745, 64701, 68967, 79443, 99619, 107835, 114945, 132405, 160923, 268205, 298857, 323505, 344835, 397215, 482769, 498095, 697333, 804615, 896571, 1494285, 2091999, 2413845, 3486665, 4482855, 6275997, 10459995, 31379985]

約数ペア:

[(1, 31379985), (3, 10459995), (5, 6275997), (7, 4482855), (9, 3486665), (13, 2413845), (15, 2091999), (21, 1494285), (35, 896571), (39, 804615), (45, 697333), (63, 498095), (65, 482769), (79, 397215), (91, 344835), (97, 323505), (105, 298857), (117, 268205), (195, 160923), (237, 132405), (273, 114945), (291, 107835), (315, 99619), (395, 79443), (455, 68967), (485, 64701), (553, 56745), (585, 53641), (679, 46215), (711, 44135), (819, 38315), (873, 35945), (1027, 30555), (1185, 26481), (1261, 24885), (1365, 22989), (1455, 21567), (1659, 18915), (2037, 15405), (2765, 11349), (3081, 10185), (3395, 9243), (3555, 8827), (3783, 8295), (4095, 7663), (4365, 7189), (4977, 6305), (5135, 6111)]