71858920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{256639}}^1$

素因数の和:256657

約数の個数: 32

約数和(自身を含む): 184780800

約数和(自身を除く): 112921880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 256639, 513278, 1026556, 1283195, 1796473, 2053112, 2566390, 3592946, 5132780, 7185892, 8982365, 10265560, 14371784, 17964730, 35929460, 71858920]

約数ペア:

[(1, 71858920), (2, 35929460), (4, 17964730), (5, 14371784), (7, 10265560), (8, 8982365), (10, 7185892), (14, 5132780), (20, 3592946), (28, 2566390), (35, 2053112), (40, 1796473), (56, 1283195), (70, 1026556), (140, 513278), (280, 256639)]