18432790

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:384

約数の個数: 32

約数和(自身を含む): 34020000

約数和(自身を除く): 15587210

約数列:

[1, 2, 5, 10, 89, 139, 149, 178, 278, 298, 445, 695, 745, 890, 1390, 1490, 12371, 13261, 20711, 24742, 26522, 41422, 61855, 66305, 103555, 123710, 132610, 207110, 1843279, 3686558, 9216395, 18432790]

約数ペア:

[(1, 18432790), (2, 9216395), (5, 3686558), (10, 1843279), (89, 207110), (139, 132610), (149, 123710), (178, 103555), (278, 66305), (298, 61855), (445, 41422), (695, 26522), (745, 24742), (890, 20711), (1390, 13261), (1490, 12371)]