21624765

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{619}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 36961920

約数和(自身を除く): 15337155

約数列:

[1, 3, 5, 15, 17, 51, 85, 137, 255, 411, 619, 685, 1857, 2055, 2329, 3095, 6987, 9285, 10523, 11645, 31569, 34935, 52615, 84803, 157845, 254409, 424015, 1272045, 1441651, 4324953, 7208255, 21624765]

約数ペア:

[(1, 21624765), (3, 7208255), (5, 4324953), (15, 1441651), (17, 1272045), (51, 424015), (85, 254409), (137, 157845), (255, 84803), (411, 52615), (619, 34935), (685, 31569), (1857, 11645), (2055, 10523), (2329, 9285), (3095, 6987)]