18789825

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 32944320

約数和(自身を除く): 14154495

約数列:

[1, 3, 5, 15, 25, 29, 53, 75, 87, 145, 159, 163, 265, 435, 489, 725, 795, 815, 1325, 1537, 2175, 2445, 3975, 4075, 4611, 4727, 7685, 8639, 12225, 14181, 23055, 23635, 25917, 38425, 43195, 70905, 115275, 118175, 129585, 215975, 250531, 354525, 647925, 751593, 1252655, 3757965, 6263275, 18789825]

約数ペア:

[(1, 18789825), (3, 6263275), (5, 3757965), (15, 1252655), (25, 751593), (29, 647925), (53, 354525), (75, 250531), (87, 215975), (145, 129585), (159, 118175), (163, 115275), (265, 70905), (435, 43195), (489, 38425), (725, 25917), (795, 23635), (815, 23055), (1325, 14181), (1537, 12225), (2175, 8639), (2445, 7685), (3975, 4727), (4075, 4611)]