1291189250

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{397289}}^1$

素因数の和:397319

約数の個数: 32

約数和(自身を含む): 2603044080

約数和(自身を除く): 1311854830

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 397289, 794578, 1986445, 3972890, 5164757, 9932225, 10329514, 19864450, 25823785, 49661125, 51647570, 99322250, 129118925, 258237850, 645594625, 1291189250]

約数ペア:

[(1, 1291189250), (2, 645594625), (5, 258237850), (10, 129118925), (13, 99322250), (25, 51647570), (26, 49661125), (50, 25823785), (65, 19864450), (125, 10329514), (130, 9932225), (250, 5164757), (325, 3972890), (650, 1986445), (1625, 794578), (3250, 397289)]