81461968

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38281}}^1$

素因数の和:38315

約数の個数: 40

約数和(自身を含む): 189878720

約数和(自身を除く): 108416752

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 76, 112, 133, 152, 266, 304, 532, 1064, 2128, 38281, 76562, 153124, 267967, 306248, 535934, 612496, 727339, 1071868, 1454678, 2143736, 2909356, 4287472, 5091373, 5818712, 10182746, 11637424, 20365492, 40730984, 81461968]

約数ペア:

[(1, 81461968), (2, 40730984), (4, 20365492), (7, 11637424), (8, 10182746), (14, 5818712), (16, 5091373), (19, 4287472), (28, 2909356), (38, 2143736), (56, 1454678), (76, 1071868), (112, 727339), (133, 612496), (152, 535934), (266, 306248), (304, 267967), (532, 153124), (1064, 76562), (2128, 38281)]