18686556

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2557}}^1$

素因数の和:2603

約数の個数: 72

約数和(自身を含む): 55866720

約数和(自身を除く): 37180164

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 36, 42, 58, 63, 84, 87, 116, 126, 174, 203, 252, 261, 348, 406, 522, 609, 812, 1044, 1218, 1827, 2436, 2557, 3654, 5114, 7308, 7671, 10228, 15342, 17899, 23013, 30684, 35798, 46026, 53697, 71596, 74153, 92052, 107394, 148306, 161091, 214788, 222459, 296612, 322182, 444918, 519071, 644364, 667377, 889836, 1038142, 1334754, 1557213, 2076284, 2669508, 3114426, 4671639, 6228852, 9343278, 18686556]

約数ペア:

[(1, 18686556), (2, 9343278), (3, 6228852), (4, 4671639), (6, 3114426), (7, 2669508), (9, 2076284), (12, 1557213), (14, 1334754), (18, 1038142), (21, 889836), (28, 667377), (29, 644364), (36, 519071), (42, 444918), (58, 322182), (63, 296612), (84, 222459), (87, 214788), (116, 161091), (126, 148306), (174, 107394), (203, 92052), (252, 74153), (261, 71596), (348, 53697), (406, 46026), (522, 35798), (609, 30684), (812, 23013), (1044, 17899), (1218, 15342), (1827, 10228), (2436, 7671), (2557, 7308), (3654, 5114)]