218970143

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{601}}^1$

素因数の和:735

約数の個数: 32

約数和(自身を含む): 273702912

約数和(自身を除く): 54732769

約数列:

[1, 7, 23, 31, 73, 161, 217, 511, 601, 713, 1679, 2263, 4207, 4991, 11753, 13823, 15841, 18631, 43873, 52049, 96761, 130417, 307111, 364343, 428513, 1009079, 1360063, 2999591, 7063553, 9520441, 31281449, 218970143]

約数ペア:

[(1, 218970143), (7, 31281449), (23, 9520441), (31, 7063553), (73, 2999591), (161, 1360063), (217, 1009079), (511, 428513), (601, 364343), (713, 307111), (1679, 130417), (2263, 96761), (4207, 52049), (4991, 43873), (11753, 18631), (13823, 15841)]