18818640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{443}}^1$

素因数の和:521

約数の個数: 120

約数和(自身を含む): 64415520

約数和(自身を除く): 45596880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 59, 60, 72, 80, 90, 118, 120, 144, 177, 180, 236, 240, 295, 354, 360, 443, 472, 531, 590, 708, 720, 885, 886, 944, 1062, 1180, 1329, 1416, 1770, 1772, 2124, 2215, 2360, 2655, 2658, 2832, 3540, 3544, 3987, 4248, 4430, 4720, 5310, 5316, 6645, 7080, 7088, 7974, 8496, 8860, 10620, 10632, 13290, 14160, 15948, 17720, 19935, 21240, 21264, 26137, 26580, 31896, 35440, 39870, 42480, 52274, 53160, 63792, 78411, 79740, 104548, 106320, 130685, 156822, 159480, 209096, 235233, 261370, 313644, 318960, 392055, 418192, 470466, 522740, 627288, 784110, 940932, 1045480, 1176165, 1254576, 1568220, 1881864, 2090960, 2352330, 3136440, 3763728, 4704660, 6272880, 9409320, 18818640]

約数ペア:

[(1, 18818640), (2, 9409320), (3, 6272880), (4, 4704660), (5, 3763728), (6, 3136440), (8, 2352330), (9, 2090960), (10, 1881864), (12, 1568220), (15, 1254576), (16, 1176165), (18, 1045480), (20, 940932), (24, 784110), (30, 627288), (36, 522740), (40, 470466), (45, 418192), (48, 392055), (59, 318960), (60, 313644), (72, 261370), (80, 235233), (90, 209096), (118, 159480), (120, 156822), (144, 130685), (177, 106320), (180, 104548), (236, 79740), (240, 78411), (295, 63792), (354, 53160), (360, 52274), (443, 42480), (472, 39870), (531, 35440), (590, 31896), (708, 26580), (720, 26137), (885, 21264), (886, 21240), (944, 19935), (1062, 17720), (1180, 15948), (1329, 14160), (1416, 13290), (1770, 10632), (1772, 10620), (2124, 8860), (2215, 8496), (2360, 7974), (2655, 7088), (2658, 7080), (2832, 6645), (3540, 5316), (3544, 5310), (3987, 4720), (4248, 4430)]