19947800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5867}}^1$

素因数の和:5900

約数の個数: 48

約数和(自身を含む): 49115160

約数和(自身を除く): 29167360

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, 5867, 11734, 23468, 29335, 46936, 58670, 99739, 117340, 146675, 199478, 234680, 293350, 398956, 498695, 586700, 797912, 997390, 1173400, 1994780, 2493475, 3989560, 4986950, 9973900, 19947800]

約数ペア:

[(1, 19947800), (2, 9973900), (4, 4986950), (5, 3989560), (8, 2493475), (10, 1994780), (17, 1173400), (20, 997390), (25, 797912), (34, 586700), (40, 498695), (50, 398956), (68, 293350), (85, 234680), (100, 199478), (136, 146675), (170, 117340), (200, 99739), (340, 58670), (425, 46936), (680, 29335), (850, 23468), (1700, 11734), (3400, 5867)]