20696025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:598

約数の個数: 48

約数和(自身を含む): 39680000

約数和(自身を除く): 18983975

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 79, 105, 175, 237, 395, 499, 525, 553, 1185, 1497, 1659, 1975, 2495, 2765, 3493, 5925, 7485, 8295, 10479, 12475, 13825, 17465, 37425, 39421, 41475, 52395, 87325, 118263, 197105, 261975, 275947, 591315, 827841, 985525, 1379735, 2956575, 4139205, 6898675, 20696025]

約数ペア:

[(1, 20696025), (3, 6898675), (5, 4139205), (7, 2956575), (15, 1379735), (21, 985525), (25, 827841), (35, 591315), (75, 275947), (79, 261975), (105, 197105), (175, 118263), (237, 87325), (395, 52395), (499, 41475), (525, 39421), (553, 37425), (1185, 17465), (1497, 13825), (1659, 12475), (1975, 10479), (2495, 8295), (2765, 7485), (3493, 5925)]