19903000

素因数分解:

$2^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1531}}^1$

素因数の和:1565

約数の個数: 64

約数和(自身を含む): 50188320

約数和(自身を除く): 30285320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 1000, 1300, 1531, 1625, 2600, 3062, 3250, 6124, 6500, 7655, 12248, 13000, 15310, 19903, 30620, 38275, 39806, 61240, 76550, 79612, 99515, 153100, 159224, 191375, 199030, 306200, 382750, 398060, 497575, 765500, 796120, 995150, 1531000, 1990300, 2487875, 3980600, 4975750, 9951500, 19903000]

約数ペア:

[(1, 19903000), (2, 9951500), (4, 4975750), (5, 3980600), (8, 2487875), (10, 1990300), (13, 1531000), (20, 995150), (25, 796120), (26, 765500), (40, 497575), (50, 398060), (52, 382750), (65, 306200), (100, 199030), (104, 191375), (125, 159224), (130, 153100), (200, 99515), (250, 79612), (260, 76550), (325, 61240), (500, 39806), (520, 38275), (650, 30620), (1000, 19903), (1300, 15310), (1531, 13000), (1625, 12248), (2600, 7655), (3062, 6500), (3250, 6124)]