20104210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{461}}^1$

素因数の和:571

約数の個数: 48

約数和(自身を含む): 42661080

約数和(自身を除く): 22556870

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 89, 98, 178, 245, 445, 461, 490, 623, 890, 922, 1246, 2305, 3115, 3227, 4361, 4610, 6230, 6454, 8722, 16135, 21805, 22589, 32270, 41029, 43610, 45178, 82058, 112945, 205145, 225890, 287203, 410290, 574406, 1436015, 2010421, 2872030, 4020842, 10052105, 20104210]

約数ペア:

[(1, 20104210), (2, 10052105), (5, 4020842), (7, 2872030), (10, 2010421), (14, 1436015), (35, 574406), (49, 410290), (70, 287203), (89, 225890), (98, 205145), (178, 112945), (245, 82058), (445, 45178), (461, 43610), (490, 41029), (623, 32270), (890, 22589), (922, 21805), (1246, 16135), (2305, 8722), (3115, 6454), (3227, 6230), (4361, 4610)]