20913400

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{6151}}^1$

素因数の和:6184

約数の個数: 48

約数和(自身を含む): 51492240

約数和(自身を除く): 30578840

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 340, 425, 680, 850, 1700, 3400, 6151, 12302, 24604, 30755, 49208, 61510, 104567, 123020, 153775, 209134, 246040, 307550, 418268, 522835, 615100, 836536, 1045670, 1230200, 2091340, 2614175, 4182680, 5228350, 10456700, 20913400]

約数ペア:

[(1, 20913400), (2, 10456700), (4, 5228350), (5, 4182680), (8, 2614175), (10, 2091340), (17, 1230200), (20, 1045670), (25, 836536), (34, 615100), (40, 522835), (50, 418268), (68, 307550), (85, 246040), (100, 209134), (136, 153775), (170, 123020), (200, 104567), (340, 61510), (425, 49208), (680, 30755), (850, 24604), (1700, 12302), (3400, 6151)]