21011679

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{3821}}^1$

素因数の和:3887

約数の個数: 24

約数和(自身を含む): 33388992

約数和(自身を除く): 12377313

約数列:

[1, 3, 9, 13, 39, 47, 117, 141, 423, 611, 1833, 3821, 5499, 11463, 34389, 49673, 149019, 179587, 447057, 538761, 1616283, 2334631, 7003893, 21011679]

約数ペア:

[(1, 21011679), (3, 7003893), (9, 2334631), (13, 1616283), (39, 538761), (47, 447057), (117, 179587), (141, 149019), (423, 49673), (611, 34389), (1833, 11463), (3821, 5499)]