20753175

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 37310112

約数和(自身を除く): 16556937

約数列:

[1, 3, 5, 15, 17, 25, 41, 51, 75, 85, 123, 205, 255, 397, 425, 615, 697, 1025, 1191, 1275, 1985, 2091, 3075, 3485, 5955, 6749, 9925, 10455, 16277, 17425, 20247, 29775, 33745, 48831, 52275, 81385, 101235, 168725, 244155, 276709, 406925, 506175, 830127, 1220775, 1383545, 4150635, 6917725, 20753175]

約数ペア:

[(1, 20753175), (3, 6917725), (5, 4150635), (15, 1383545), (17, 1220775), (25, 830127), (41, 506175), (51, 406925), (75, 276709), (85, 244155), (123, 168725), (205, 101235), (255, 81385), (397, 52275), (425, 48831), (615, 33745), (697, 29775), (1025, 20247), (1191, 17425), (1275, 16277), (1985, 10455), (2091, 9925), (3075, 6749), (3485, 5955)]