21356283

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 31997952

約数和(自身を除く): 10641669

約数列:

[1, 3, 13, 39, 47, 61, 141, 183, 191, 573, 611, 793, 1833, 2379, 2483, 2867, 7449, 8601, 8977, 11651, 26931, 34953, 37271, 111813, 116701, 151463, 350103, 454389, 547597, 1642791, 7118761, 21356283]

約数ペア:

[(1, 21356283), (3, 7118761), (13, 1642791), (39, 547597), (47, 454389), (61, 350103), (141, 151463), (183, 116701), (191, 111813), (573, 37271), (611, 34953), (793, 26931), (1833, 11651), (2379, 8977), (2483, 8601), (2867, 7449)]