20730225

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{229}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 36961920

約数和(自身を除く): 16231695

約数列:

[1, 3, 5, 15, 17, 25, 51, 71, 75, 85, 213, 229, 255, 355, 425, 687, 1065, 1145, 1207, 1275, 1775, 3435, 3621, 3893, 5325, 5725, 6035, 11679, 16259, 17175, 18105, 19465, 30175, 48777, 58395, 81295, 90525, 97325, 243885, 276403, 291975, 406475, 829209, 1219425, 1382015, 4146045, 6910075, 20730225]

約数ペア:

[(1, 20730225), (3, 6910075), (5, 4146045), (15, 1382015), (17, 1219425), (25, 829209), (51, 406475), (71, 291975), (75, 276403), (85, 243885), (213, 97325), (229, 90525), (255, 81295), (355, 58395), (425, 48777), (687, 30175), (1065, 19465), (1145, 18105), (1207, 17175), (1275, 16259), (1775, 11679), (3435, 6035), (3621, 5725), (3893, 5325)]