18585968

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:345

約数の個数: 40

約数和(自身を含む): 37133040

約数和(自身を除く): 18547072

約数列:

[1, 2, 4, 8, 16, 61, 122, 137, 139, 244, 274, 278, 488, 548, 556, 976, 1096, 1112, 2192, 2224, 8357, 8479, 16714, 16958, 19043, 33428, 33916, 38086, 66856, 67832, 76172, 133712, 135664, 152344, 304688, 1161623, 2323246, 4646492, 9292984, 18585968]

約数ペア:

[(1, 18585968), (2, 9292984), (4, 4646492), (8, 2323246), (16, 1161623), (61, 304688), (122, 152344), (137, 135664), (139, 133712), (244, 76172), (274, 67832), (278, 66856), (488, 38086), (548, 33916), (556, 33428), (976, 19043), (1096, 16958), (1112, 16714), (2192, 8479), (2224, 8357)]