19967325

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 38318976

約数和(自身を除く): 18351651

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 73, 75, 105, 175, 219, 365, 511, 521, 525, 1095, 1533, 1563, 1825, 2555, 2605, 3647, 5475, 7665, 7815, 10941, 12775, 13025, 18235, 38033, 38325, 39075, 54705, 91175, 114099, 190165, 266231, 273525, 570495, 798693, 950825, 1331155, 2852475, 3993465, 6655775, 19967325]

約数ペア:

[(1, 19967325), (3, 6655775), (5, 3993465), (7, 2852475), (15, 1331155), (21, 950825), (25, 798693), (35, 570495), (73, 273525), (75, 266231), (105, 190165), (175, 114099), (219, 91175), (365, 54705), (511, 39075), (521, 38325), (525, 38033), (1095, 18235), (1533, 13025), (1563, 12775), (1825, 10941), (2555, 7815), (2605, 7665), (3647, 5475)]