21719000

素因数分解:

$2^3\times 5^3\times {\mathrm{37}}^1\times {\mathrm{587}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 52284960

約数和(自身を除く): 30565960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 125, 148, 185, 200, 250, 296, 370, 500, 587, 740, 925, 1000, 1174, 1480, 1850, 2348, 2935, 3700, 4625, 4696, 5870, 7400, 9250, 11740, 14675, 18500, 21719, 23480, 29350, 37000, 43438, 58700, 73375, 86876, 108595, 117400, 146750, 173752, 217190, 293500, 434380, 542975, 587000, 868760, 1085950, 2171900, 2714875, 4343800, 5429750, 10859500, 21719000]

約数ペア:

[(1, 21719000), (2, 10859500), (4, 5429750), (5, 4343800), (8, 2714875), (10, 2171900), (20, 1085950), (25, 868760), (37, 587000), (40, 542975), (50, 434380), (74, 293500), (100, 217190), (125, 173752), (148, 146750), (185, 117400), (200, 108595), (250, 86876), (296, 73375), (370, 58700), (500, 43438), (587, 37000), (740, 29350), (925, 23480), (1000, 21719), (1174, 18500), (1480, 14675), (1850, 11740), (2348, 9250), (2935, 7400), (3700, 5870), (4625, 4696)]