20400912

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{547}}^1$

素因数の和:605

約数の個数: 120

約数和(自身を含む): 67136576

約数和(自身を除く): 46735664

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 37, 42, 48, 56, 63, 72, 74, 84, 111, 112, 126, 144, 148, 168, 222, 252, 259, 296, 333, 336, 444, 504, 518, 547, 592, 666, 777, 888, 1008, 1036, 1094, 1332, 1554, 1641, 1776, 2072, 2188, 2331, 2664, 3108, 3282, 3829, 4144, 4376, 4662, 4923, 5328, 6216, 6564, 7658, 8752, 9324, 9846, 11487, 12432, 13128, 15316, 18648, 19692, 20239, 22974, 26256, 30632, 34461, 37296, 39384, 40478, 45948, 60717, 61264, 68922, 78768, 80956, 91896, 121434, 137844, 141673, 161912, 182151, 183792, 242868, 275688, 283346, 323824, 364302, 425019, 485736, 551376, 566692, 728604, 850038, 971472, 1133384, 1275057, 1457208, 1700076, 2266768, 2550114, 2914416, 3400152, 5100228, 6800304, 10200456, 20400912]

約数ペア:

[(1, 20400912), (2, 10200456), (3, 6800304), (4, 5100228), (6, 3400152), (7, 2914416), (8, 2550114), (9, 2266768), (12, 1700076), (14, 1457208), (16, 1275057), (18, 1133384), (21, 971472), (24, 850038), (28, 728604), (36, 566692), (37, 551376), (42, 485736), (48, 425019), (56, 364302), (63, 323824), (72, 283346), (74, 275688), (84, 242868), (111, 183792), (112, 182151), (126, 161912), (144, 141673), (148, 137844), (168, 121434), (222, 91896), (252, 80956), (259, 78768), (296, 68922), (333, 61264), (336, 60717), (444, 45948), (504, 40478), (518, 39384), (547, 37296), (592, 34461), (666, 30632), (777, 26256), (888, 22974), (1008, 20239), (1036, 19692), (1094, 18648), (1332, 15316), (1554, 13128), (1641, 12432), (1776, 11487), (2072, 9846), (2188, 9324), (2331, 8752), (2664, 7658), (3108, 6564), (3282, 6216), (3829, 5328), (4144, 4923), (4376, 4662)]