19806984

素因数分解:

$2^3\times 3^3\times {\mathrm{107}}^1\times {\mathrm{857}}^1$

素因数の和:979

約数の個数: 64

約数和(自身を含む): 55598400

約数和(自身を除く): 35791416

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 107, 108, 214, 216, 321, 428, 642, 856, 857, 963, 1284, 1714, 1926, 2568, 2571, 2889, 3428, 3852, 5142, 5778, 6856, 7704, 7713, 10284, 11556, 15426, 20568, 23112, 23139, 30852, 46278, 61704, 91699, 92556, 183398, 185112, 275097, 366796, 550194, 733592, 825291, 1100388, 1650582, 2200776, 2475873, 3301164, 4951746, 6602328, 9903492, 19806984]

約数ペア:

[(1, 19806984), (2, 9903492), (3, 6602328), (4, 4951746), (6, 3301164), (8, 2475873), (9, 2200776), (12, 1650582), (18, 1100388), (24, 825291), (27, 733592), (36, 550194), (54, 366796), (72, 275097), (107, 185112), (108, 183398), (214, 92556), (216, 91699), (321, 61704), (428, 46278), (642, 30852), (856, 23139), (857, 23112), (963, 20568), (1284, 15426), (1714, 11556), (1926, 10284), (2568, 7713), (2571, 7704), (2889, 6856), (3428, 5778), (3852, 5142)]