81521072

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{164357}}^1$

素因数の和:164396

約数の個数: 20

約数和(自身を含む): 163043136

約数和(自身を除く): 81522064

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 164357, 328714, 657428, 1314856, 2629712, 5095067, 10190134, 20380268, 40760536, 81521072]

約数ペア:

[(1, 81521072), (2, 40760536), (4, 20380268), (8, 10190134), (16, 5095067), (31, 2629712), (62, 1314856), (124, 657428), (248, 328714), (496, 164357)]