18178020

素因数分解:

$2^2\times 3^4\times 5^1\times 7^2\times {\mathrm{229}}^1$

素因数の和:264

約数の個数: 180

約数和(自身を含む): 66625020

約数和(自身を除く): 48447000

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 49, 54, 60, 63, 70, 81, 84, 90, 98, 105, 108, 126, 135, 140, 147, 162, 180, 189, 196, 210, 229, 245, 252, 270, 294, 315, 324, 378, 405, 420, 441, 458, 490, 540, 567, 588, 630, 687, 735, 756, 810, 882, 916, 945, 980, 1134, 1145, 1260, 1323, 1374, 1470, 1603, 1620, 1764, 1890, 2061, 2205, 2268, 2290, 2646, 2748, 2835, 2940, 3206, 3435, 3780, 3969, 4122, 4410, 4580, 4809, 5292, 5670, 6183, 6412, 6615, 6870, 7938, 8015, 8244, 8820, 9618, 10305, 11221, 11340, 12366, 13230, 13740, 14427, 15876, 16030, 18549, 19236, 19845, 20610, 22442, 24045, 24732, 26460, 28854, 30915, 32060, 33663, 37098, 39690, 41220, 43281, 44884, 48090, 56105, 57708, 61830, 67326, 72135, 74196, 79380, 86562, 92745, 96180, 100989, 112210, 123660, 129843, 134652, 144270, 168315, 173124, 185490, 201978, 216405, 224420, 259686, 288540, 302967, 336630, 370980, 403956, 432810, 504945, 519372, 605934, 649215, 673260, 865620, 908901, 1009890, 1211868, 1298430, 1514835, 1817802, 2019780, 2596860, 3029670, 3635604, 4544505, 6059340, 9089010, 18178020]

約数ペア:

[(1, 18178020), (2, 9089010), (3, 6059340), (4, 4544505), (5, 3635604), (6, 3029670), (7, 2596860), (9, 2019780), (10, 1817802), (12, 1514835), (14, 1298430), (15, 1211868), (18, 1009890), (20, 908901), (21, 865620), (27, 673260), (28, 649215), (30, 605934), (35, 519372), (36, 504945), (42, 432810), (45, 403956), (49, 370980), (54, 336630), (60, 302967), (63, 288540), (70, 259686), (81, 224420), (84, 216405), (90, 201978), (98, 185490), (105, 173124), (108, 168315), (126, 144270), (135, 134652), (140, 129843), (147, 123660), (162, 112210), (180, 100989), (189, 96180), (196, 92745), (210, 86562), (229, 79380), (245, 74196), (252, 72135), (270, 67326), (294, 61830), (315, 57708), (324, 56105), (378, 48090), (405, 44884), (420, 43281), (441, 41220), (458, 39690), (490, 37098), (540, 33663), (567, 32060), (588, 30915), (630, 28854), (687, 26460), (735, 24732), (756, 24045), (810, 22442), (882, 20610), (916, 19845), (945, 19236), (980, 18549), (1134, 16030), (1145, 15876), (1260, 14427), (1323, 13740), (1374, 13230), (1470, 12366), (1603, 11340), (1620, 11221), (1764, 10305), (1890, 9618), (2061, 8820), (2205, 8244), (2268, 8015), (2290, 7938), (2646, 6870), (2748, 6615), (2835, 6412), (2940, 6183), (3206, 5670), (3435, 5292), (3780, 4809), (3969, 4580), (4122, 4410)]