81246780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3499}}^1$

素因数の和:3560

約数の個数: 96

約数和(自身を含む): 258720000

約数和(自身を除く): 177473220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 86, 90, 108, 129, 135, 172, 180, 215, 258, 270, 387, 430, 516, 540, 645, 774, 860, 1161, 1290, 1548, 1935, 2322, 2580, 3499, 3870, 4644, 5805, 6998, 7740, 10497, 11610, 13996, 17495, 20994, 23220, 31491, 34990, 41988, 52485, 62982, 69980, 94473, 104970, 125964, 150457, 157455, 188946, 209940, 300914, 314910, 377892, 451371, 472365, 601828, 629820, 752285, 902742, 944730, 1354113, 1504570, 1805484, 1889460, 2256855, 2708226, 3009140, 4062339, 4513710, 5416452, 6770565, 8124678, 9027420, 13541130, 16249356, 20311695, 27082260, 40623390, 81246780]

約数ペア:

[(1, 81246780), (2, 40623390), (3, 27082260), (4, 20311695), (5, 16249356), (6, 13541130), (9, 9027420), (10, 8124678), (12, 6770565), (15, 5416452), (18, 4513710), (20, 4062339), (27, 3009140), (30, 2708226), (36, 2256855), (43, 1889460), (45, 1805484), (54, 1504570), (60, 1354113), (86, 944730), (90, 902742), (108, 752285), (129, 629820), (135, 601828), (172, 472365), (180, 451371), (215, 377892), (258, 314910), (270, 300914), (387, 209940), (430, 188946), (516, 157455), (540, 150457), (645, 125964), (774, 104970), (860, 94473), (1161, 69980), (1290, 62982), (1548, 52485), (1935, 41988), (2322, 34990), (2580, 31491), (3499, 23220), (3870, 20994), (4644, 17495), (5805, 13996), (6998, 11610), (7740, 10497)]