81989710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{1409}}^1$

素因数の和:1473

約数の個数: 48

約数和(自身を含む): 168421680

約数和(自身を除く): 86431970

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 529, 1058, 1265, 1409, 2530, 2645, 2818, 5290, 5819, 7045, 11638, 14090, 15499, 29095, 30998, 32407, 58190, 64814, 77495, 154990, 162035, 324070, 356477, 712954, 745361, 1490722, 1782385, 3564770, 3726805, 7453610, 8198971, 16397942, 40994855, 81989710]

約数ペア:

[(1, 81989710), (2, 40994855), (5, 16397942), (10, 8198971), (11, 7453610), (22, 3726805), (23, 3564770), (46, 1782385), (55, 1490722), (110, 745361), (115, 712954), (230, 356477), (253, 324070), (506, 162035), (529, 154990), (1058, 77495), (1265, 64814), (1409, 58190), (2530, 32407), (2645, 30998), (2818, 29095), (5290, 15499), (5819, 14090), (7045, 11638)]