21898360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:496

約数の個数: 64

約数和(自身を含む): 54263520

約数和(自身を除く): 32365160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 157, 220, 314, 317, 440, 628, 634, 785, 1256, 1268, 1570, 1585, 1727, 2536, 3140, 3170, 3454, 3487, 6280, 6340, 6908, 6974, 8635, 12680, 13816, 13948, 17270, 17435, 27896, 34540, 34870, 49769, 69080, 69740, 99538, 139480, 199076, 248845, 398152, 497690, 547459, 995380, 1094918, 1990760, 2189836, 2737295, 4379672, 5474590, 10949180, 21898360]

約数ペア:

[(1, 21898360), (2, 10949180), (4, 5474590), (5, 4379672), (8, 2737295), (10, 2189836), (11, 1990760), (20, 1094918), (22, 995380), (40, 547459), (44, 497690), (55, 398152), (88, 248845), (110, 199076), (157, 139480), (220, 99538), (314, 69740), (317, 69080), (440, 49769), (628, 34870), (634, 34540), (785, 27896), (1256, 17435), (1268, 17270), (1570, 13948), (1585, 13816), (1727, 12680), (2536, 8635), (3140, 6974), (3170, 6908), (3454, 6340), (3487, 6280)]