21611811

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{881}}^1$

素因数の和:951

約数の個数: 32

約数和(自身を含む): 33784128

約数和(自身を除く): 12172317

約数列:

[1, 3, 13, 17, 37, 39, 51, 111, 221, 481, 629, 663, 881, 1443, 1887, 2643, 8177, 11453, 14977, 24531, 32597, 34359, 44931, 97791, 194701, 423761, 554149, 584103, 1271283, 1662447, 7203937, 21611811]

約数ペア:

[(1, 21611811), (3, 7203937), (13, 1662447), (17, 1271283), (37, 584103), (39, 554149), (51, 423761), (111, 194701), (221, 97791), (481, 44931), (629, 34359), (663, 32597), (881, 24531), (1443, 14977), (1887, 11453), (2643, 8177)]