18688144

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1181}}^1$

素因数の和:1255

約数の個数: 40

約数和(自身を含む): 38693952

約数和(自身を除く): 20005808

約数列:

[1, 2, 4, 8, 16, 23, 43, 46, 86, 92, 172, 184, 344, 368, 688, 989, 1181, 1978, 2362, 3956, 4724, 7912, 9448, 15824, 18896, 27163, 50783, 54326, 101566, 108652, 203132, 217304, 406264, 434608, 812528, 1168009, 2336018, 4672036, 9344072, 18688144]

約数ペア:

[(1, 18688144), (2, 9344072), (4, 4672036), (8, 2336018), (16, 1168009), (23, 812528), (43, 434608), (46, 406264), (86, 217304), (92, 203132), (172, 108652), (184, 101566), (344, 54326), (368, 50783), (688, 27163), (989, 18896), (1181, 15824), (1978, 9448), (2362, 7912), (3956, 4724)]