21537711

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1427}}^1$

素因数の和:1492

約数の個数: 32

約数和(自身を含む): 35185920

約数和(自身を除く): 13648209

約数列:

[1, 3, 9, 13, 27, 39, 43, 117, 129, 351, 387, 559, 1161, 1427, 1677, 4281, 5031, 12843, 15093, 18551, 38529, 55653, 61361, 166959, 184083, 500877, 552249, 797693, 1656747, 2393079, 7179237, 21537711]

約数ペア:

[(1, 21537711), (3, 7179237), (9, 2393079), (13, 1656747), (27, 797693), (39, 552249), (43, 500877), (117, 184083), (129, 166959), (351, 61361), (387, 55653), (559, 38529), (1161, 18551), (1427, 15093), (1677, 12843), (4281, 5031)]