18285340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 39674880

約数和(自身を除く): 21389540

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 163, 284, 316, 326, 355, 395, 652, 710, 790, 815, 1420, 1580, 1630, 3260, 5609, 11218, 11573, 12877, 22436, 23146, 25754, 28045, 46292, 51508, 56090, 57865, 64385, 112180, 115730, 128770, 231460, 257540, 914267, 1828534, 3657068, 4571335, 9142670, 18285340]

約数ペア:

[(1, 18285340), (2, 9142670), (4, 4571335), (5, 3657068), (10, 1828534), (20, 914267), (71, 257540), (79, 231460), (142, 128770), (158, 115730), (163, 112180), (284, 64385), (316, 57865), (326, 56090), (355, 51508), (395, 46292), (652, 28045), (710, 25754), (790, 23146), (815, 22436), (1420, 12877), (1580, 11573), (1630, 11218), (3260, 5609)]