18998538

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 43666560

約数和(自身を除く): 24668022

約数列:

[1, 2, 3, 6, 13, 26, 29, 37, 39, 58, 74, 78, 87, 111, 174, 222, 227, 377, 454, 481, 681, 754, 962, 1073, 1131, 1362, 1443, 2146, 2262, 2886, 2951, 3219, 5902, 6438, 6583, 8399, 8853, 13166, 13949, 16798, 17706, 19749, 25197, 27898, 39498, 41847, 50394, 83694, 85579, 109187, 171158, 218374, 243571, 256737, 327561, 487142, 513474, 655122, 730713, 1461426, 3166423, 6332846, 9499269, 18998538]

約数ペア:

[(1, 18998538), (2, 9499269), (3, 6332846), (6, 3166423), (13, 1461426), (26, 730713), (29, 655122), (37, 513474), (39, 487142), (58, 327561), (74, 256737), (78, 243571), (87, 218374), (111, 171158), (174, 109187), (222, 85579), (227, 83694), (377, 50394), (454, 41847), (481, 39498), (681, 27898), (754, 25197), (962, 19749), (1073, 17706), (1131, 16798), (1362, 13949), (1443, 13166), (2146, 8853), (2262, 8399), (2886, 6583), (2951, 6438), (3219, 5902)]