21158325

素因数分解:

$3^2\times 5^2\times {\mathrm{271}}^1\times {\mathrm{347}}^1$

素因数の和:634

約数の個数: 36

約数和(自身を含む): 38146368

約数和(自身を除く): 16988043

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 271, 347, 813, 1041, 1355, 1735, 2439, 3123, 4065, 5205, 6775, 8675, 12195, 15615, 20325, 26025, 60975, 78075, 94037, 282111, 470185, 846333, 1410555, 2350925, 4231665, 7052775, 21158325]

約数ペア:

[(1, 21158325), (3, 7052775), (5, 4231665), (9, 2350925), (15, 1410555), (25, 846333), (45, 470185), (75, 282111), (225, 94037), (271, 78075), (347, 60975), (813, 26025), (1041, 20325), (1355, 15615), (1735, 12195), (2439, 8675), (3123, 6775), (4065, 5205)]