21699495

素因数分解:

$3^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:557

約数の個数: 40

約数和(自身を含む): 39291120

約数和(自身を除く): 17591625

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 131, 135, 393, 405, 409, 655, 1179, 1227, 1965, 2045, 3537, 3681, 5895, 6135, 10611, 11043, 17685, 18405, 33129, 53055, 53579, 55215, 160737, 165645, 267895, 482211, 803685, 1446633, 2411055, 4339899, 7233165, 21699495]

約数ペア:

[(1, 21699495), (3, 7233165), (5, 4339899), (9, 2411055), (15, 1446633), (27, 803685), (45, 482211), (81, 267895), (131, 165645), (135, 160737), (393, 55215), (405, 53579), (409, 53055), (655, 33129), (1179, 18405), (1227, 17685), (1965, 11043), (2045, 10611), (3537, 6135), (3681, 5895)]