17778780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2297}}^1$

素因数の和:2355

約数の個数: 72

約数和(自身を含む): 55207152

約数和(自身を除く): 37428372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2297, 2580, 3870, 4594, 6891, 7740, 9188, 11485, 13782, 20673, 22970, 27564, 34455, 41346, 45940, 68910, 82692, 98771, 103365, 137820, 197542, 206730, 296313, 395084, 413460, 493855, 592626, 888939, 987710, 1185252, 1481565, 1777878, 1975420, 2963130, 3555756, 4444695, 5926260, 8889390, 17778780]

約数ペア:

[(1, 17778780), (2, 8889390), (3, 5926260), (4, 4444695), (5, 3555756), (6, 2963130), (9, 1975420), (10, 1777878), (12, 1481565), (15, 1185252), (18, 987710), (20, 888939), (30, 592626), (36, 493855), (43, 413460), (45, 395084), (60, 296313), (86, 206730), (90, 197542), (129, 137820), (172, 103365), (180, 98771), (215, 82692), (258, 68910), (387, 45940), (430, 41346), (516, 34455), (645, 27564), (774, 22970), (860, 20673), (1290, 13782), (1548, 11485), (1935, 9188), (2297, 7740), (2580, 6891), (3870, 4594)]