81557072

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{113}}^1\times {\mathrm{571}}^1$

素因数の和:771

約数の個数: 40

約数和(自身を含む): 161715840

約数和(自身を除く): 80158768

約数列:

[1, 2, 4, 8, 16, 79, 113, 158, 226, 316, 452, 571, 632, 904, 1142, 1264, 1808, 2284, 4568, 8927, 9136, 17854, 35708, 45109, 64523, 71416, 90218, 129046, 142832, 180436, 258092, 360872, 516184, 721744, 1032368, 5097317, 10194634, 20389268, 40778536, 81557072]

約数ペア:

[(1, 81557072), (2, 40778536), (4, 20389268), (8, 10194634), (16, 5097317), (79, 1032368), (113, 721744), (158, 516184), (226, 360872), (316, 258092), (452, 180436), (571, 142832), (632, 129046), (904, 90218), (1142, 71416), (1264, 64523), (1808, 45109), (2284, 35708), (4568, 17854), (8927, 9136)]