21534345

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{499}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 43056000

約数和(自身を除く): 21521655

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 137, 315, 411, 499, 685, 959, 1233, 1497, 2055, 2495, 2877, 3493, 4491, 4795, 6165, 7485, 8631, 10479, 14385, 17465, 22455, 31437, 43155, 52395, 68363, 157185, 205089, 341815, 478541, 615267, 1025445, 1435623, 2392705, 3076335, 4306869, 7178115, 21534345]

約数ペア:

[(1, 21534345), (3, 7178115), (5, 4306869), (7, 3076335), (9, 2392705), (15, 1435623), (21, 1025445), (35, 615267), (45, 478541), (63, 341815), (105, 205089), (137, 157185), (315, 68363), (411, 52395), (499, 43155), (685, 31437), (959, 22455), (1233, 17465), (1497, 14385), (2055, 10479), (2495, 8631), (2877, 7485), (3493, 6165), (4491, 4795)]