21277565

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{271}}^1\times {\mathrm{383}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 26320896

約数和(自身を除く): 5043331

約数列:

[1, 5, 41, 205, 271, 383, 1355, 1915, 11111, 15703, 55555, 78515, 103793, 518965, 4255513, 21277565]

約数ペア:

[(1, 21277565), (5, 4255513), (41, 518965), (205, 103793), (271, 78515), (383, 55555), (1355, 15703), (1915, 11111)]