16809205

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 25937280

約数和(自身を除く): 9128075

約数列:

[1, 5, 7, 19, 23, 35, 49, 95, 115, 133, 157, 161, 245, 437, 665, 785, 805, 931, 1099, 1127, 2185, 2983, 3059, 3611, 4655, 5495, 5635, 7693, 14915, 15295, 18055, 20881, 21413, 25277, 38465, 68609, 104405, 107065, 126385, 146167, 176939, 343045, 480263, 730835, 884695, 2401315, 3361841, 16809205]

約数ペア:

[(1, 16809205), (5, 3361841), (7, 2401315), (19, 884695), (23, 730835), (35, 480263), (49, 343045), (95, 176939), (115, 146167), (133, 126385), (157, 107065), (161, 104405), (245, 68609), (437, 38465), (665, 25277), (785, 21413), (805, 20881), (931, 18055), (1099, 15295), (1127, 14915), (2185, 7693), (2983, 5635), (3059, 5495), (3611, 4655)]