308978840

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{56383}}^1$

素因数の和:56531

約数の個数: 32

約数和(自身を含む): 700289280

約数和(自身を除く): 391310440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 56383, 112766, 225532, 281915, 451064, 563830, 1127660, 2255320, 7724471, 15448942, 30897884, 38622355, 61795768, 77244710, 154489420, 308978840]

約数ペア:

[(1, 308978840), (2, 154489420), (4, 77244710), (5, 61795768), (8, 38622355), (10, 30897884), (20, 15448942), (40, 7724471), (137, 2255320), (274, 1127660), (548, 563830), (685, 451064), (1096, 281915), (1370, 225532), (2740, 112766), (5480, 56383)]