256553080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{916261}}^1$

素因数の和:916279

約数の個数: 32

約数和(自身を含む): 659708640

約数和(自身を除く): 403155560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 916261, 1832522, 3665044, 4581305, 6413827, 7330088, 9162610, 12827654, 18325220, 25655308, 32069135, 36650440, 51310616, 64138270, 128276540, 256553080]

約数ペア:

[(1, 256553080), (2, 128276540), (4, 64138270), (5, 51310616), (7, 36650440), (8, 32069135), (10, 25655308), (14, 18325220), (20, 12827654), (28, 9162610), (35, 7330088), (40, 6413827), (56, 4581305), (70, 3665044), (140, 1832522), (280, 916261)]