81345860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{131203}}^1$

素因数の和:131243

約数の個数: 24

約数和(自身を含む): 176338176

約数和(自身を除く): 94992316

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 131203, 262406, 524812, 656015, 1312030, 2624060, 4067293, 8134586, 16269172, 20336465, 40672930, 81345860]

約数ペア:

[(1, 81345860), (2, 40672930), (4, 20336465), (5, 16269172), (10, 8134586), (20, 4067293), (31, 2624060), (62, 1312030), (124, 656015), (155, 524812), (310, 262406), (620, 131203)]