28709475

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{20147}}^1$

素因数の和:20179

約数の個数: 24

約数和(自身を含む): 49967040

約数和(自身を除く): 21257565

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 20147, 60441, 100735, 302205, 382793, 503675, 1148379, 1511025, 1913965, 5741895, 9569825, 28709475]

約数ペア:

[(1, 28709475), (3, 9569825), (5, 5741895), (15, 1913965), (19, 1511025), (25, 1148379), (57, 503675), (75, 382793), (95, 302205), (285, 100735), (475, 60441), (1425, 20147)]