18902870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{281}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 40323744

約数和(自身を除く): 21420874

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 62, 70, 155, 217, 281, 310, 434, 562, 961, 1085, 1405, 1922, 1967, 2170, 2810, 3934, 4805, 6727, 8711, 9610, 9835, 13454, 17422, 19670, 33635, 43555, 60977, 67270, 87110, 121954, 270041, 304885, 540082, 609770, 1350205, 1890287, 2700410, 3780574, 9451435, 18902870]

約数ペア:

[(1, 18902870), (2, 9451435), (5, 3780574), (7, 2700410), (10, 1890287), (14, 1350205), (31, 609770), (35, 540082), (62, 304885), (70, 270041), (155, 121954), (217, 87110), (281, 67270), (310, 60977), (434, 43555), (562, 33635), (961, 19670), (1085, 17422), (1405, 13454), (1922, 9835), (1967, 9610), (2170, 8711), (2810, 6727), (3934, 4805)]