18100980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{443}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 55272672

約数和(自身を除く): 37171692

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 443, 454, 681, 886, 908, 1135, 1329, 1362, 1772, 2043, 2215, 2270, 2658, 2724, 3405, 3987, 4086, 4430, 4540, 5316, 6645, 6810, 7974, 8172, 8860, 10215, 13290, 13620, 15948, 19935, 20430, 26580, 39870, 40860, 79740, 100561, 201122, 301683, 402244, 502805, 603366, 905049, 1005610, 1206732, 1508415, 1810098, 2011220, 3016830, 3620196, 4525245, 6033660, 9050490, 18100980]

約数ペア:

[(1, 18100980), (2, 9050490), (3, 6033660), (4, 4525245), (5, 3620196), (6, 3016830), (9, 2011220), (10, 1810098), (12, 1508415), (15, 1206732), (18, 1005610), (20, 905049), (30, 603366), (36, 502805), (45, 402244), (60, 301683), (90, 201122), (180, 100561), (227, 79740), (443, 40860), (454, 39870), (681, 26580), (886, 20430), (908, 19935), (1135, 15948), (1329, 13620), (1362, 13290), (1772, 10215), (2043, 8860), (2215, 8172), (2270, 7974), (2658, 6810), (2724, 6645), (3405, 5316), (3987, 4540), (4086, 4430)]