18679820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{25243}}^1$

素因数の和:25289

約数の個数: 24

約数和(自身を含む): 40289424

約数和(自身を除く): 21609604

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740, 25243, 50486, 100972, 126215, 252430, 504860, 933991, 1867982, 3735964, 4669955, 9339910, 18679820]

約数ペア:

[(1, 18679820), (2, 9339910), (4, 4669955), (5, 3735964), (10, 1867982), (20, 933991), (37, 504860), (74, 252430), (148, 126215), (185, 100972), (370, 50486), (740, 25243)]