19817889

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{317}}^1$

素因数の和:569

約数の個数: 32

約数和(自身を含む): 32766720

約数和(自身を除く): 12948831

約数列:

[1, 3, 7, 13, 21, 39, 91, 229, 273, 317, 687, 951, 1603, 2219, 2977, 4121, 4809, 6657, 8931, 12363, 20839, 28847, 62517, 72593, 86541, 217779, 508151, 943709, 1524453, 2831127, 6605963, 19817889]

約数ペア:

[(1, 19817889), (3, 6605963), (7, 2831127), (13, 1524453), (21, 943709), (39, 508151), (91, 217779), (229, 86541), (273, 72593), (317, 62517), (687, 28847), (951, 20839), (1603, 12363), (2219, 8931), (2977, 6657), (4121, 4809)]