256289640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{3301}}^1$

素因数の和:3962

約数の個数: 64

約数和(自身を含む): 770290560

約数和(自身を除く): 514000920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 647, 1294, 1941, 2588, 3235, 3301, 3882, 5176, 6470, 6602, 7764, 9705, 9903, 12940, 13204, 15528, 16505, 19410, 19806, 25880, 26408, 33010, 38820, 39612, 49515, 66020, 77640, 79224, 99030, 132040, 198060, 396120, 2135747, 4271494, 6407241, 8542988, 10678735, 12814482, 17085976, 21357470, 25628964, 32036205, 42714940, 51257928, 64072410, 85429880, 128144820, 256289640]

約数ペア:

[(1, 256289640), (2, 128144820), (3, 85429880), (4, 64072410), (5, 51257928), (6, 42714940), (8, 32036205), (10, 25628964), (12, 21357470), (15, 17085976), (20, 12814482), (24, 10678735), (30, 8542988), (40, 6407241), (60, 4271494), (120, 2135747), (647, 396120), (1294, 198060), (1941, 132040), (2588, 99030), (3235, 79224), (3301, 77640), (3882, 66020), (5176, 49515), (6470, 39612), (6602, 38820), (7764, 33010), (9705, 26408), (9903, 25880), (12940, 19806), (13204, 19410), (15528, 16505)]