21859605

素因数分解:

$3^3\times 5^1\times {\mathrm{161923}}^1$

素因数の和:161937

約数の個数: 16

約数和(自身を含む): 38861760

約数和(自身を除く): 17002155

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 161923, 485769, 809615, 1457307, 2428845, 4371921, 7286535, 21859605]

約数ペア:

[(1, 21859605), (3, 7286535), (5, 4371921), (9, 2428845), (15, 1457307), (27, 809615), (45, 485769), (135, 161923)]