28321000

素因数分解:

$2^3\times 5^3\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:371

約数の個数: 64

約数和(自身を含む): 67092480

約数和(自身を除く): 38771480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 127, 200, 223, 250, 254, 446, 500, 508, 635, 892, 1000, 1016, 1115, 1270, 1784, 2230, 2540, 3175, 4460, 5080, 5575, 6350, 8920, 11150, 12700, 15875, 22300, 25400, 27875, 28321, 31750, 44600, 55750, 56642, 63500, 111500, 113284, 127000, 141605, 223000, 226568, 283210, 566420, 708025, 1132840, 1416050, 2832100, 3540125, 5664200, 7080250, 14160500, 28321000]

約数ペア:

[(1, 28321000), (2, 14160500), (4, 7080250), (5, 5664200), (8, 3540125), (10, 2832100), (20, 1416050), (25, 1132840), (40, 708025), (50, 566420), (100, 283210), (125, 226568), (127, 223000), (200, 141605), (223, 127000), (250, 113284), (254, 111500), (446, 63500), (500, 56642), (508, 55750), (635, 44600), (892, 31750), (1000, 28321), (1016, 27875), (1115, 25400), (1270, 22300), (1784, 15875), (2230, 12700), (2540, 11150), (3175, 8920), (4460, 6350), (5080, 5575)]