21331948

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 43110144

約数和(自身を除く): 21778196

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 107, 197, 214, 253, 394, 428, 506, 788, 1012, 1177, 2167, 2354, 2461, 4334, 4531, 4708, 4922, 8668, 9062, 9844, 18124, 21079, 27071, 42158, 49841, 54142, 84316, 99682, 108284, 199364, 231869, 463738, 484817, 927476, 969634, 1939268, 5332987, 10665974, 21331948]

約数ペア:

[(1, 21331948), (2, 10665974), (4, 5332987), (11, 1939268), (22, 969634), (23, 927476), (44, 484817), (46, 463738), (92, 231869), (107, 199364), (197, 108284), (214, 99682), (253, 84316), (394, 54142), (428, 49841), (506, 42158), (788, 27071), (1012, 21079), (1177, 18124), (2167, 9844), (2354, 9062), (2461, 8668), (4334, 4922), (4531, 4708)]