20678800

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^1\times {\mathrm{3041}}^1$

素因数の和:3076

約数の個数: 60

約数和(自身を含む): 52620516

約数和(自身を除く): 31941716

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 200, 272, 340, 400, 425, 680, 850, 1360, 1700, 3041, 3400, 6082, 6800, 12164, 15205, 24328, 30410, 48656, 51697, 60820, 76025, 103394, 121640, 152050, 206788, 243280, 258485, 304100, 413576, 516970, 608200, 827152, 1033940, 1216400, 1292425, 2067880, 2584850, 4135760, 5169700, 10339400, 20678800]

約数ペア:

[(1, 20678800), (2, 10339400), (4, 5169700), (5, 4135760), (8, 2584850), (10, 2067880), (16, 1292425), (17, 1216400), (20, 1033940), (25, 827152), (34, 608200), (40, 516970), (50, 413576), (68, 304100), (80, 258485), (85, 243280), (100, 206788), (136, 152050), (170, 121640), (200, 103394), (272, 76025), (340, 60820), (400, 51697), (425, 48656), (680, 30410), (850, 24328), (1360, 15205), (1700, 12164), (3041, 6800), (3400, 6082)]