51371800

素因数分解:

$2^3\times 5^2\times {\mathrm{397}}^1\times {\mathrm{647}}^1$

素因数の和:1060

約数の個数: 48

約数和(自身を含む): 119925360

約数和(自身を除く): 68553560

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 397, 647, 794, 1294, 1588, 1985, 2588, 3176, 3235, 3970, 5176, 6470, 7940, 9925, 12940, 15880, 16175, 19850, 25880, 32350, 39700, 64700, 79400, 129400, 256859, 513718, 1027436, 1284295, 2054872, 2568590, 5137180, 6421475, 10274360, 12842950, 25685900, 51371800]

約数ペア:

[(1, 51371800), (2, 25685900), (4, 12842950), (5, 10274360), (8, 6421475), (10, 5137180), (20, 2568590), (25, 2054872), (40, 1284295), (50, 1027436), (100, 513718), (200, 256859), (397, 129400), (647, 79400), (794, 64700), (1294, 39700), (1588, 32350), (1985, 25880), (2588, 19850), (3176, 16175), (3235, 15880), (3970, 12940), (5176, 9925), (6470, 7940)]