21423750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{29}}^1\times {\mathrm{197}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 55669680

約数和(自身を除く): 34245930

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 29, 30, 50, 58, 75, 87, 125, 145, 150, 174, 197, 250, 290, 375, 394, 435, 591, 625, 725, 750, 870, 985, 1182, 1250, 1450, 1875, 1970, 2175, 2955, 3625, 3750, 4350, 4925, 5713, 5910, 7250, 9850, 10875, 11426, 14775, 17139, 18125, 21750, 24625, 28565, 29550, 34278, 36250, 49250, 54375, 57130, 73875, 85695, 108750, 123125, 142825, 147750, 171390, 246250, 285650, 369375, 428475, 714125, 738750, 856950, 1428250, 2142375, 3570625, 4284750, 7141250, 10711875, 21423750]

約数ペア:

[(1, 21423750), (2, 10711875), (3, 7141250), (5, 4284750), (6, 3570625), (10, 2142375), (15, 1428250), (25, 856950), (29, 738750), (30, 714125), (50, 428475), (58, 369375), (75, 285650), (87, 246250), (125, 171390), (145, 147750), (150, 142825), (174, 123125), (197, 108750), (250, 85695), (290, 73875), (375, 57130), (394, 54375), (435, 49250), (591, 36250), (625, 34278), (725, 29550), (750, 28565), (870, 24625), (985, 21750), (1182, 18125), (1250, 17139), (1450, 14775), (1875, 11426), (1970, 10875), (2175, 9850), (2955, 7250), (3625, 5910), (3750, 5713), (4350, 4925)]