21038000

素因数分解:

$2^4\times 5^3\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 80

約数和(自身を含む): 51957984

約数和(自身を除く): 30919984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 67, 80, 100, 125, 134, 157, 200, 250, 268, 314, 335, 400, 500, 536, 628, 670, 785, 1000, 1072, 1256, 1340, 1570, 1675, 2000, 2512, 2680, 3140, 3350, 3925, 5360, 6280, 6700, 7850, 8375, 10519, 12560, 13400, 15700, 16750, 19625, 21038, 26800, 31400, 33500, 39250, 42076, 52595, 62800, 67000, 78500, 84152, 105190, 134000, 157000, 168304, 210380, 262975, 314000, 420760, 525950, 841520, 1051900, 1314875, 2103800, 2629750, 4207600, 5259500, 10519000, 21038000]

約数ペア:

[(1, 21038000), (2, 10519000), (4, 5259500), (5, 4207600), (8, 2629750), (10, 2103800), (16, 1314875), (20, 1051900), (25, 841520), (40, 525950), (50, 420760), (67, 314000), (80, 262975), (100, 210380), (125, 168304), (134, 157000), (157, 134000), (200, 105190), (250, 84152), (268, 78500), (314, 67000), (335, 62800), (400, 52595), (500, 42076), (536, 39250), (628, 33500), (670, 31400), (785, 26800), (1000, 21038), (1072, 19625), (1256, 16750), (1340, 15700), (1570, 13400), (1675, 12560), (2000, 10519), (2512, 8375), (2680, 7850), (3140, 6700), (3350, 6280), (3925, 5360)]