64943460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{857}}^1$

素因数の和:1293

約数の個数: 72

約数和(自身を含む): 197693496

約数和(自身を除く): 132750036

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 421, 842, 857, 1263, 1684, 1714, 2105, 2526, 2571, 3428, 3789, 4210, 4285, 5052, 5142, 6315, 7578, 7713, 8420, 8570, 10284, 12630, 12855, 15156, 15426, 17140, 18945, 25260, 25710, 30852, 37890, 38565, 51420, 75780, 77130, 154260, 360797, 721594, 1082391, 1443188, 1803985, 2164782, 3247173, 3607970, 4329564, 5411955, 6494346, 7215940, 10823910, 12988692, 16235865, 21647820, 32471730, 64943460]

約数ペア:

[(1, 64943460), (2, 32471730), (3, 21647820), (4, 16235865), (5, 12988692), (6, 10823910), (9, 7215940), (10, 6494346), (12, 5411955), (15, 4329564), (18, 3607970), (20, 3247173), (30, 2164782), (36, 1803985), (45, 1443188), (60, 1082391), (90, 721594), (180, 360797), (421, 154260), (842, 77130), (857, 75780), (1263, 51420), (1684, 38565), (1714, 37890), (2105, 30852), (2526, 25710), (2571, 25260), (3428, 18945), (3789, 17140), (4210, 15426), (4285, 15156), (5052, 12855), (5142, 12630), (6315, 10284), (7578, 8570), (7713, 8420)]