21488145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{10771}}^1$

素因数の和:10805

約数の個数: 32

約数和(自身を含む): 41364480

約数和(自身を除く): 19876335

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 57, 95, 105, 133, 285, 399, 665, 1995, 10771, 32313, 53855, 75397, 161565, 204649, 226191, 376985, 613947, 1023245, 1130955, 1432543, 3069735, 4297629, 7162715, 21488145]

約数ペア:

[(1, 21488145), (3, 7162715), (5, 4297629), (7, 3069735), (15, 1432543), (19, 1130955), (21, 1023245), (35, 613947), (57, 376985), (95, 226191), (105, 204649), (133, 161565), (285, 75397), (399, 53855), (665, 32313), (1995, 10771)]