18487833

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{281}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 30573312

約数和(自身を除く): 12085479

約数列:

[1, 3, 7, 13, 21, 39, 91, 241, 273, 281, 723, 843, 1687, 1967, 3133, 3653, 5061, 5901, 9399, 10959, 21931, 25571, 65793, 67721, 76713, 203163, 474047, 880373, 1422141, 2641119, 6162611, 18487833]

約数ペア:

[(1, 18487833), (3, 6162611), (7, 2641119), (13, 1422141), (21, 880373), (39, 474047), (91, 203163), (241, 76713), (273, 67721), (281, 65793), (723, 25571), (843, 21931), (1687, 10959), (1967, 9399), (3133, 5901), (3653, 5061)]