625630220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:871

約数の個数: 72

約数和(自身を含む): 1390978512

約数和(自身を除く): 765348292

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 172, 215, 310, 430, 620, 757, 860, 961, 1333, 1514, 1922, 2666, 3028, 3785, 3844, 4805, 5332, 6665, 7570, 9610, 13330, 15140, 19220, 23467, 26660, 32551, 41323, 46934, 65102, 82646, 93868, 117335, 130204, 162755, 165292, 206615, 234670, 325510, 413230, 469340, 651020, 727477, 826460, 1009081, 1454954, 2018162, 2909908, 3637385, 4036324, 5045405, 7274770, 10090810, 14549540, 20181620, 31281511, 62563022, 125126044, 156407555, 312815110, 625630220]

約数ペア:

[(1, 625630220), (2, 312815110), (4, 156407555), (5, 125126044), (10, 62563022), (20, 31281511), (31, 20181620), (43, 14549540), (62, 10090810), (86, 7274770), (124, 5045405), (155, 4036324), (172, 3637385), (215, 2909908), (310, 2018162), (430, 1454954), (620, 1009081), (757, 826460), (860, 727477), (961, 651020), (1333, 469340), (1514, 413230), (1922, 325510), (2666, 234670), (3028, 206615), (3785, 165292), (3844, 162755), (4805, 130204), (5332, 117335), (6665, 93868), (7570, 82646), (9610, 65102), (13330, 46934), (15140, 41323), (19220, 32551), (23467, 26660)]