21819500

素因数分解:

$2^2\times 5^3\times {\mathrm{17}}^2\times {\mathrm{151}}^1$

素因数の和:204

約数の個数: 72

約数和(自身を含む): 50957088

約数和(自身を除く): 29137588

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 125, 151, 170, 250, 289, 302, 340, 425, 500, 578, 604, 755, 850, 1156, 1445, 1510, 1700, 2125, 2567, 2890, 3020, 3775, 4250, 5134, 5780, 7225, 7550, 8500, 10268, 12835, 14450, 15100, 18875, 25670, 28900, 36125, 37750, 43639, 51340, 64175, 72250, 75500, 87278, 128350, 144500, 174556, 218195, 256700, 320875, 436390, 641750, 872780, 1090975, 1283500, 2181950, 4363900, 5454875, 10909750, 21819500]

約数ペア:

[(1, 21819500), (2, 10909750), (4, 5454875), (5, 4363900), (10, 2181950), (17, 1283500), (20, 1090975), (25, 872780), (34, 641750), (50, 436390), (68, 320875), (85, 256700), (100, 218195), (125, 174556), (151, 144500), (170, 128350), (250, 87278), (289, 75500), (302, 72250), (340, 64175), (425, 51340), (500, 43639), (578, 37750), (604, 36125), (755, 28900), (850, 25670), (1156, 18875), (1445, 15100), (1510, 14450), (1700, 12835), (2125, 10268), (2567, 8500), (2890, 7550), (3020, 7225), (3775, 5780), (4250, 5134)]