21137538

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{1181}}^1$

素因数の和:1362

約数の個数: 32

約数和(自身を含む): 44821440

約数和(自身を除く): 23683902

約数列:

[1, 2, 3, 6, 19, 38, 57, 114, 157, 314, 471, 942, 1181, 2362, 2983, 3543, 5966, 7086, 8949, 17898, 22439, 44878, 67317, 134634, 185417, 370834, 556251, 1112502, 3522923, 7045846, 10568769, 21137538]

約数ペア:

[(1, 21137538), (2, 10568769), (3, 7045846), (6, 3522923), (19, 1112502), (38, 556251), (57, 370834), (114, 185417), (157, 134634), (314, 67317), (471, 44878), (942, 22439), (1181, 17898), (2362, 8949), (2983, 7086), (3543, 5966)]