18495208

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:745

約数の個数: 32

約数和(自身を含む): 36720000

約数和(自身を除く): 18224792

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 271, 449, 542, 898, 1084, 1796, 2168, 3592, 5149, 8531, 10298, 17062, 20596, 34124, 41192, 68248, 121679, 243358, 486716, 973432, 2311901, 4623802, 9247604, 18495208]

約数ペア:

[(1, 18495208), (2, 9247604), (4, 4623802), (8, 2311901), (19, 973432), (38, 486716), (76, 243358), (152, 121679), (271, 68248), (449, 41192), (542, 34124), (898, 20596), (1084, 17062), (1796, 10298), (2168, 8531), (3592, 5149)]