21690724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 21854876

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 89, 116, 178, 191, 319, 356, 382, 638, 764, 979, 1276, 1958, 2101, 2581, 3916, 4202, 5162, 5539, 8404, 10324, 11078, 16999, 22156, 28391, 33998, 56782, 60929, 67996, 113564, 121858, 186989, 243716, 373978, 492971, 747956, 985942, 1971884, 5422681, 10845362, 21690724]

約数ペア:

[(1, 21690724), (2, 10845362), (4, 5422681), (11, 1971884), (22, 985942), (29, 747956), (44, 492971), (58, 373978), (89, 243716), (116, 186989), (178, 121858), (191, 113564), (319, 67996), (356, 60929), (382, 56782), (638, 33998), (764, 28391), (979, 22156), (1276, 16999), (1958, 11078), (2101, 10324), (2581, 8404), (3916, 5539), (4202, 5162)]