18904380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{28643}}^1$

素因数の和:28666

約数の個数: 48

約数和(自身を含む): 57746304

約数和(自身を除く): 38841924

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660, 28643, 57286, 85929, 114572, 143215, 171858, 286430, 315073, 343716, 429645, 572860, 630146, 859290, 945219, 1260292, 1575365, 1718580, 1890438, 3150730, 3780876, 4726095, 6301460, 9452190, 18904380]

約数ペア:

[(1, 18904380), (2, 9452190), (3, 6301460), (4, 4726095), (5, 3780876), (6, 3150730), (10, 1890438), (11, 1718580), (12, 1575365), (15, 1260292), (20, 945219), (22, 859290), (30, 630146), (33, 572860), (44, 429645), (55, 343716), (60, 315073), (66, 286430), (110, 171858), (132, 143215), (165, 114572), (220, 85929), (330, 57286), (660, 28643)]