17991540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:262

約数の個数: 144

約数和(自身を含む): 63423360

約数和(自身を除く): 45431820

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 109, 126, 131, 140, 180, 210, 218, 252, 262, 315, 327, 393, 420, 436, 524, 545, 630, 654, 655, 763, 786, 917, 981, 1090, 1179, 1260, 1308, 1310, 1526, 1572, 1635, 1834, 1962, 1965, 2180, 2289, 2358, 2620, 2751, 3052, 3270, 3668, 3815, 3924, 3930, 4578, 4585, 4716, 4905, 5502, 5895, 6540, 6867, 7630, 7860, 8253, 9156, 9170, 9810, 11004, 11445, 11790, 13734, 13755, 14279, 15260, 16506, 18340, 19620, 22890, 23580, 27468, 27510, 28558, 33012, 34335, 41265, 42837, 45780, 55020, 57116, 68670, 71395, 82530, 85674, 99953, 128511, 137340, 142790, 165060, 171348, 199906, 214185, 257022, 285580, 299859, 399812, 428370, 499765, 514044, 599718, 642555, 856740, 899577, 999530, 1199436, 1285110, 1499295, 1799154, 1999060, 2570220, 2998590, 3598308, 4497885, 5997180, 8995770, 17991540]

約数ペア:

[(1, 17991540), (2, 8995770), (3, 5997180), (4, 4497885), (5, 3598308), (6, 2998590), (7, 2570220), (9, 1999060), (10, 1799154), (12, 1499295), (14, 1285110), (15, 1199436), (18, 999530), (20, 899577), (21, 856740), (28, 642555), (30, 599718), (35, 514044), (36, 499765), (42, 428370), (45, 399812), (60, 299859), (63, 285580), (70, 257022), (84, 214185), (90, 199906), (105, 171348), (109, 165060), (126, 142790), (131, 137340), (140, 128511), (180, 99953), (210, 85674), (218, 82530), (252, 71395), (262, 68670), (315, 57116), (327, 55020), (393, 45780), (420, 42837), (436, 41265), (524, 34335), (545, 33012), (630, 28558), (654, 27510), (655, 27468), (763, 23580), (786, 22890), (917, 19620), (981, 18340), (1090, 16506), (1179, 15260), (1260, 14279), (1308, 13755), (1310, 13734), (1526, 11790), (1572, 11445), (1635, 11004), (1834, 9810), (1962, 9170), (1965, 9156), (2180, 8253), (2289, 7860), (2358, 7630), (2620, 6867), (2751, 6540), (3052, 5895), (3270, 5502), (3668, 4905), (3815, 4716), (3924, 4585), (3930, 4578)]