18897340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1753}}^1$

素因数の和:1787

約数の個数: 72

約数和(自身を含む): 50388912

約数和(自身を除く): 31491572

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1753, 2156, 2695, 3506, 5390, 7012, 8765, 10780, 12271, 17530, 19283, 24542, 35060, 38566, 49084, 61355, 77132, 85897, 96415, 122710, 134981, 171794, 192830, 245420, 269962, 343588, 385660, 429485, 539924, 674905, 858970, 944867, 1349810, 1717940, 1889734, 2699620, 3779468, 4724335, 9448670, 18897340]

約数ペア:

[(1, 18897340), (2, 9448670), (4, 4724335), (5, 3779468), (7, 2699620), (10, 1889734), (11, 1717940), (14, 1349810), (20, 944867), (22, 858970), (28, 674905), (35, 539924), (44, 429485), (49, 385660), (55, 343588), (70, 269962), (77, 245420), (98, 192830), (110, 171794), (140, 134981), (154, 122710), (196, 96415), (220, 85897), (245, 77132), (308, 61355), (385, 49084), (490, 38566), (539, 35060), (770, 24542), (980, 19283), (1078, 17530), (1540, 12271), (1753, 10780), (2156, 8765), (2695, 7012), (3506, 5390)]