21987800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:285

約数の個数: 96

約数和(自身を含む): 56246400

約数和(自身を除く): 34258600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 29, 34, 40, 50, 58, 68, 85, 100, 116, 136, 145, 170, 200, 223, 232, 290, 340, 425, 446, 493, 580, 680, 725, 850, 892, 986, 1115, 1160, 1450, 1700, 1784, 1972, 2230, 2465, 2900, 3400, 3791, 3944, 4460, 4930, 5575, 5800, 6467, 7582, 8920, 9860, 11150, 12325, 12934, 15164, 18955, 19720, 22300, 24650, 25868, 30328, 32335, 37910, 44600, 49300, 51736, 64670, 75820, 94775, 98600, 109939, 129340, 151640, 161675, 189550, 219878, 258680, 323350, 379100, 439756, 549695, 646700, 758200, 879512, 1099390, 1293400, 2198780, 2748475, 4397560, 5496950, 10993900, 21987800]

約数ペア:

[(1, 21987800), (2, 10993900), (4, 5496950), (5, 4397560), (8, 2748475), (10, 2198780), (17, 1293400), (20, 1099390), (25, 879512), (29, 758200), (34, 646700), (40, 549695), (50, 439756), (58, 379100), (68, 323350), (85, 258680), (100, 219878), (116, 189550), (136, 161675), (145, 151640), (170, 129340), (200, 109939), (223, 98600), (232, 94775), (290, 75820), (340, 64670), (425, 51736), (446, 49300), (493, 44600), (580, 37910), (680, 32335), (725, 30328), (850, 25868), (892, 24650), (986, 22300), (1115, 19720), (1160, 18955), (1450, 15164), (1700, 12934), (1784, 12325), (1972, 11150), (2230, 9860), (2465, 8920), (2900, 7582), (3400, 6467), (3791, 5800), (3944, 5575), (4460, 4930)]