81917872

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{521}}^1$

素因数の和:877

約数の個数: 40

約数和(自身を含む): 164668032

約数和(自身を除く): 82750160

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 317, 496, 521, 634, 1042, 1268, 2084, 2536, 4168, 5072, 8336, 9827, 16151, 19654, 32302, 39308, 64604, 78616, 129208, 157232, 165157, 258416, 330314, 660628, 1321256, 2642512, 5119867, 10239734, 20479468, 40958936, 81917872]

約数ペア:

[(1, 81917872), (2, 40958936), (4, 20479468), (8, 10239734), (16, 5119867), (31, 2642512), (62, 1321256), (124, 660628), (248, 330314), (317, 258416), (496, 165157), (521, 157232), (634, 129208), (1042, 78616), (1268, 64604), (2084, 39308), (2536, 32302), (4168, 19654), (5072, 16151), (8336, 9827)]