161891968

素因数分解:

$2^7\times 7^1\times {\mathrm{281}}^1\times {\mathrm{643}}^1$

素因数の和:945

約数の個数: 64

約数和(自身を含む): 370480320

約数和(自身を除く): 208588352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 281, 448, 562, 643, 896, 1124, 1286, 1967, 2248, 2572, 3934, 4496, 4501, 5144, 7868, 8992, 9002, 10288, 15736, 17984, 18004, 20576, 31472, 35968, 36008, 41152, 62944, 72016, 82304, 125888, 144032, 180683, 251776, 288064, 361366, 576128, 722732, 1264781, 1445464, 2529562, 2890928, 5059124, 5781856, 10118248, 11563712, 20236496, 23127424, 40472992, 80945984, 161891968]

約数ペア:

[(1, 161891968), (2, 80945984), (4, 40472992), (7, 23127424), (8, 20236496), (14, 11563712), (16, 10118248), (28, 5781856), (32, 5059124), (56, 2890928), (64, 2529562), (112, 1445464), (128, 1264781), (224, 722732), (281, 576128), (448, 361366), (562, 288064), (643, 251776), (896, 180683), (1124, 144032), (1286, 125888), (1967, 82304), (2248, 72016), (2572, 62944), (3934, 41152), (4496, 36008), (4501, 35968), (5144, 31472), (7868, 20576), (8992, 18004), (9002, 17984), (10288, 15736)]