77804980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{1409}}^1$

素因数の和:1680

約数の個数: 48

約数和(自身を含む): 179081280

約数和(自身を除く): 101276300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 251, 502, 1004, 1255, 1409, 2510, 2761, 2818, 5020, 5522, 5636, 7045, 11044, 13805, 14090, 15499, 27610, 28180, 30998, 55220, 61996, 77495, 154990, 309980, 353659, 707318, 1414636, 1768295, 3536590, 3890249, 7073180, 7780498, 15560996, 19451245, 38902490, 77804980]

約数ペア:

[(1, 77804980), (2, 38902490), (4, 19451245), (5, 15560996), (10, 7780498), (11, 7073180), (20, 3890249), (22, 3536590), (44, 1768295), (55, 1414636), (110, 707318), (220, 353659), (251, 309980), (502, 154990), (1004, 77495), (1255, 61996), (1409, 55220), (2510, 30998), (2761, 28180), (2818, 27610), (5020, 15499), (5522, 14090), (5636, 13805), (7045, 11044)]