21737045

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 9927595

約数列:

[1, 5, 11, 19, 31, 55, 61, 95, 121, 155, 209, 305, 341, 589, 605, 671, 1045, 1159, 1705, 1891, 2299, 2945, 3355, 3751, 5795, 6479, 7381, 9455, 11495, 12749, 18755, 20801, 32395, 35929, 36905, 63745, 71269, 104005, 140239, 179645, 228811, 356345, 395219, 701195, 1144055, 1976095, 4347409, 21737045]

約数ペア:

[(1, 21737045), (5, 4347409), (11, 1976095), (19, 1144055), (31, 701195), (55, 395219), (61, 356345), (95, 228811), (121, 179645), (155, 140239), (209, 104005), (305, 71269), (341, 63745), (589, 36905), (605, 35929), (671, 32395), (1045, 20801), (1159, 18755), (1705, 12749), (1891, 11495), (2299, 9455), (2945, 7381), (3355, 6479), (3751, 5795)]