19178000

素因数分解:

$2^4\times 5^3\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:289

約数の個数: 80

約数和(自身を含む): 47663616

約数和(自身を除く): 28485616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 43, 50, 80, 86, 100, 125, 172, 200, 215, 223, 250, 344, 400, 430, 446, 500, 688, 860, 892, 1000, 1075, 1115, 1720, 1784, 2000, 2150, 2230, 3440, 3568, 4300, 4460, 5375, 5575, 8600, 8920, 9589, 10750, 11150, 17200, 17840, 19178, 21500, 22300, 27875, 38356, 43000, 44600, 47945, 55750, 76712, 86000, 89200, 95890, 111500, 153424, 191780, 223000, 239725, 383560, 446000, 479450, 767120, 958900, 1198625, 1917800, 2397250, 3835600, 4794500, 9589000, 19178000]

約数ペア:

[(1, 19178000), (2, 9589000), (4, 4794500), (5, 3835600), (8, 2397250), (10, 1917800), (16, 1198625), (20, 958900), (25, 767120), (40, 479450), (43, 446000), (50, 383560), (80, 239725), (86, 223000), (100, 191780), (125, 153424), (172, 111500), (200, 95890), (215, 89200), (223, 86000), (250, 76712), (344, 55750), (400, 47945), (430, 44600), (446, 43000), (500, 38356), (688, 27875), (860, 22300), (892, 21500), (1000, 19178), (1075, 17840), (1115, 17200), (1720, 11150), (1784, 10750), (2000, 9589), (2150, 8920), (2230, 8600), (3440, 5575), (3568, 5375), (4300, 4460)]