28708725

素因数分解:

$3^1\times 5^2\times {\mathrm{503}}^1\times {\mathrm{761}}^1$

素因数の和:1277

約数の個数: 24

約数和(自身を含む): 47621952

約数和(自身を除く): 18913227

約数列:

[1, 3, 5, 15, 25, 75, 503, 761, 1509, 2283, 2515, 3805, 7545, 11415, 12575, 19025, 37725, 57075, 382783, 1148349, 1913915, 5741745, 9569575, 28708725]

約数ペア:

[(1, 28708725), (3, 9569575), (5, 5741745), (15, 1913915), (25, 1148349), (75, 382783), (503, 57075), (761, 37725), (1509, 19025), (2283, 12575), (2515, 11415), (3805, 7545)]