77977880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27457}}^1$

素因数の和:27539

約数の個数: 32

約数和(自身を含む): 177927840

約数和(自身を除く): 99949960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 27457, 54914, 109828, 137285, 219656, 274570, 549140, 1098280, 1949447, 3898894, 7797788, 9747235, 15595576, 19494470, 38988940, 77977880]

約数ペア:

[(1, 77977880), (2, 38988940), (4, 19494470), (5, 15595576), (8, 9747235), (10, 7797788), (20, 3898894), (40, 1949447), (71, 1098280), (142, 549140), (284, 274570), (355, 219656), (568, 137285), (710, 109828), (1420, 54914), (2840, 27457)]