28478140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61909}}^1$

素因数の和:61941

約数の個数: 24

約数和(自身を含む): 62405280

約数和(自身を除く): 33927140

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 61909, 123818, 247636, 309545, 619090, 1238180, 1423907, 2847814, 5695628, 7119535, 14239070, 28478140]

約数ペア:

[(1, 28478140), (2, 14239070), (4, 7119535), (5, 5695628), (10, 2847814), (20, 1423907), (23, 1238180), (46, 619090), (92, 309545), (115, 247636), (230, 123818), (460, 61909)]