201920180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{18731}}^1$

素因数の和:18765

約数の個数: 72

約数和(自身を含む): 538132896

約数和(自身を除く): 336212716

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, 2156, 2695, 5390, 10780, 18731, 37462, 74924, 93655, 131117, 187310, 206041, 262234, 374620, 412082, 524468, 655585, 824164, 917819, 1030205, 1311170, 1442287, 1835638, 2060410, 2622340, 2884574, 3671276, 4120820, 4589095, 5769148, 7211435, 9178190, 10096009, 14422870, 18356380, 20192018, 28845740, 40384036, 50480045, 100960090, 201920180]

約数ペア:

[(1, 201920180), (2, 100960090), (4, 50480045), (5, 40384036), (7, 28845740), (10, 20192018), (11, 18356380), (14, 14422870), (20, 10096009), (22, 9178190), (28, 7211435), (35, 5769148), (44, 4589095), (49, 4120820), (55, 3671276), (70, 2884574), (77, 2622340), (98, 2060410), (110, 1835638), (140, 1442287), (154, 1311170), (196, 1030205), (220, 917819), (245, 824164), (308, 655585), (385, 524468), (490, 412082), (539, 374620), (770, 262234), (980, 206041), (1078, 187310), (1540, 131117), (2156, 93655), (2695, 74924), (5390, 37462), (10780, 18731)]