81070360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2083}}^1$

素因数の和:2240

約数の個数: 64

約数和(自身を含む): 210067200

約数和(自身を除く): 128996840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1946, 2083, 2780, 3892, 4166, 4865, 5560, 7784, 8332, 9730, 10415, 14581, 16664, 19460, 20830, 29162, 38920, 41660, 58324, 72905, 83320, 116648, 145810, 289537, 291620, 579074, 583240, 1158148, 1447685, 2026759, 2316296, 2895370, 4053518, 5790740, 8107036, 10133795, 11581480, 16214072, 20267590, 40535180, 81070360]

約数ペア:

[(1, 81070360), (2, 40535180), (4, 20267590), (5, 16214072), (7, 11581480), (8, 10133795), (10, 8107036), (14, 5790740), (20, 4053518), (28, 2895370), (35, 2316296), (40, 2026759), (56, 1447685), (70, 1158148), (139, 583240), (140, 579074), (278, 291620), (280, 289537), (556, 145810), (695, 116648), (973, 83320), (1112, 72905), (1390, 58324), (1946, 41660), (2083, 38920), (2780, 29162), (3892, 20830), (4166, 19460), (4865, 16664), (5560, 14581), (7784, 10415), (8332, 9730)]