18561790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{227}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 39299904

約数和(自身を除く): 20738114

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 37, 65, 74, 85, 130, 170, 185, 221, 227, 370, 442, 454, 481, 629, 962, 1105, 1135, 1258, 2210, 2270, 2405, 2951, 3145, 3859, 4810, 5902, 6290, 7718, 8177, 8399, 14755, 16354, 16798, 19295, 29510, 38590, 40885, 41995, 50167, 81770, 83990, 100334, 109187, 142783, 218374, 250835, 285566, 501670, 545935, 713915, 1091870, 1427830, 1856179, 3712358, 9280895, 18561790]

約数ペア:

[(1, 18561790), (2, 9280895), (5, 3712358), (10, 1856179), (13, 1427830), (17, 1091870), (26, 713915), (34, 545935), (37, 501670), (65, 285566), (74, 250835), (85, 218374), (130, 142783), (170, 109187), (185, 100334), (221, 83990), (227, 81770), (370, 50167), (442, 41995), (454, 40885), (481, 38590), (629, 29510), (962, 19295), (1105, 16798), (1135, 16354), (1258, 14755), (2210, 8399), (2270, 8177), (2405, 7718), (2951, 6290), (3145, 5902), (3859, 4810)]