21611151

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{409}}^1$

素因数の和:540

約数の個数: 32

約数和(自身を含む): 34112000

約数和(自身を除く): 12500849

約数列:

[1, 3, 9, 19, 27, 57, 103, 171, 309, 409, 513, 927, 1227, 1957, 2781, 3681, 5871, 7771, 11043, 17613, 23313, 42127, 52839, 69939, 126381, 209817, 379143, 800413, 1137429, 2401239, 7203717, 21611151]

約数ペア:

[(1, 21611151), (3, 7203717), (9, 2401239), (19, 1137429), (27, 800413), (57, 379143), (103, 209817), (171, 126381), (309, 69939), (409, 52839), (513, 42127), (927, 23313), (1227, 17613), (1957, 11043), (2781, 7771), (3681, 5871)]