18190980

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 60540480

約数和(自身を除く): 42349500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 197, 228, 243, 270, 285, 324, 342, 380, 394, 405, 486, 513, 540, 570, 591, 684, 788, 810, 855, 972, 985, 1026, 1140, 1182, 1215, 1539, 1620, 1710, 1773, 1970, 2052, 2364, 2430, 2565, 2955, 3078, 3420, 3546, 3743, 3940, 4617, 4860, 5130, 5319, 5910, 6156, 7092, 7486, 7695, 8865, 9234, 10260, 10638, 11229, 11820, 14972, 15390, 15957, 17730, 18468, 18715, 21276, 22458, 23085, 26595, 30780, 31914, 33687, 35460, 37430, 44916, 46170, 47871, 53190, 56145, 63828, 67374, 74860, 79785, 92340, 95742, 101061, 106380, 112290, 134748, 159570, 168435, 191484, 202122, 224580, 239355, 303183, 319140, 336870, 404244, 478710, 505305, 606366, 673740, 909549, 957420, 1010610, 1212732, 1515915, 1819098, 2021220, 3031830, 3638196, 4547745, 6063660, 9095490, 18190980]

約数ペア:

[(1, 18190980), (2, 9095490), (3, 6063660), (4, 4547745), (5, 3638196), (6, 3031830), (9, 2021220), (10, 1819098), (12, 1515915), (15, 1212732), (18, 1010610), (19, 957420), (20, 909549), (27, 673740), (30, 606366), (36, 505305), (38, 478710), (45, 404244), (54, 336870), (57, 319140), (60, 303183), (76, 239355), (81, 224580), (90, 202122), (95, 191484), (108, 168435), (114, 159570), (135, 134748), (162, 112290), (171, 106380), (180, 101061), (190, 95742), (197, 92340), (228, 79785), (243, 74860), (270, 67374), (285, 63828), (324, 56145), (342, 53190), (380, 47871), (394, 46170), (405, 44916), (486, 37430), (513, 35460), (540, 33687), (570, 31914), (591, 30780), (684, 26595), (788, 23085), (810, 22458), (855, 21276), (972, 18715), (985, 18468), (1026, 17730), (1140, 15957), (1182, 15390), (1215, 14972), (1539, 11820), (1620, 11229), (1710, 10638), (1773, 10260), (1970, 9234), (2052, 8865), (2364, 7695), (2430, 7486), (2565, 7092), (2955, 6156), (3078, 5910), (3420, 5319), (3546, 5130), (3743, 4860), (3940, 4617)]