18297980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{313}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 40091520

約数和(自身を除く): 21793540

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 79, 148, 158, 185, 313, 316, 370, 395, 626, 740, 790, 1252, 1565, 1580, 2923, 3130, 5846, 6260, 11581, 11692, 14615, 23162, 24727, 29230, 46324, 49454, 57905, 58460, 98908, 115810, 123635, 231620, 247270, 494540, 914899, 1829798, 3659596, 4574495, 9148990, 18297980]

約数ペア:

[(1, 18297980), (2, 9148990), (4, 4574495), (5, 3659596), (10, 1829798), (20, 914899), (37, 494540), (74, 247270), (79, 231620), (148, 123635), (158, 115810), (185, 98908), (313, 58460), (316, 57905), (370, 49454), (395, 46324), (626, 29230), (740, 24727), (790, 23162), (1252, 14615), (1565, 11692), (1580, 11581), (2923, 6260), (3130, 5846)]