20493400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{5393}}^1$

素因数の和:5428

約数の個数: 48

約数和(自身を含む): 50164200

約数和(自身を除く): 29670800

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 760, 950, 1900, 3800, 5393, 10786, 21572, 26965, 43144, 53930, 102467, 107860, 134825, 204934, 215720, 269650, 409868, 512335, 539300, 819736, 1024670, 1078600, 2049340, 2561675, 4098680, 5123350, 10246700, 20493400]

約数ペア:

[(1, 20493400), (2, 10246700), (4, 5123350), (5, 4098680), (8, 2561675), (10, 2049340), (19, 1078600), (20, 1024670), (25, 819736), (38, 539300), (40, 512335), (50, 409868), (76, 269650), (95, 215720), (100, 204934), (152, 134825), (190, 107860), (200, 102467), (380, 53930), (475, 43144), (760, 26965), (950, 21572), (1900, 10786), (3800, 5393)]