18902888

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{191}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 17385112

約数列:

[1, 2, 4, 8, 89, 139, 178, 191, 278, 356, 382, 556, 712, 764, 1112, 1528, 12371, 16999, 24742, 26549, 33998, 49484, 53098, 67996, 98968, 106196, 135992, 212392, 2362861, 4725722, 9451444, 18902888]

約数ペア:

[(1, 18902888), (2, 9451444), (4, 4725722), (8, 2362861), (89, 212392), (139, 135992), (178, 106196), (191, 98968), (278, 67996), (356, 53098), (382, 49484), (556, 33998), (712, 26549), (764, 24742), (1112, 16999), (1528, 12371)]