21095025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1747}}^1$

素因数の和:1790

約数の個数: 48

約数和(自身を含む): 41616384

約数和(自身を除く): 20521359

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 69, 75, 105, 115, 161, 175, 345, 483, 525, 575, 805, 1725, 1747, 2415, 4025, 5241, 8735, 12075, 12229, 26205, 36687, 40181, 43675, 61145, 120543, 131025, 183435, 200905, 281267, 305725, 602715, 843801, 917175, 1004525, 1406335, 3013575, 4219005, 7031675, 21095025]

約数ペア:

[(1, 21095025), (3, 7031675), (5, 4219005), (7, 3013575), (15, 1406335), (21, 1004525), (23, 917175), (25, 843801), (35, 602715), (69, 305725), (75, 281267), (105, 200905), (115, 183435), (161, 131025), (175, 120543), (345, 61145), (483, 43675), (525, 40181), (575, 36687), (805, 26205), (1725, 12229), (1747, 12075), (2415, 8735), (4025, 5241)]