21392007

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{617}}^1$

素因数の和:767

約数の個数: 32

約数和(自身を含む): 35438592

約数和(自身を除く): 14046585

約数列:

[1, 3, 7, 13, 21, 39, 91, 127, 273, 381, 617, 889, 1651, 1851, 2667, 4319, 4953, 8021, 11557, 12957, 24063, 34671, 56147, 78359, 168441, 235077, 548513, 1018667, 1645539, 3056001, 7130669, 21392007]

約数ペア:

[(1, 21392007), (3, 7130669), (7, 3056001), (13, 1645539), (21, 1018667), (39, 548513), (91, 235077), (127, 168441), (273, 78359), (381, 56147), (617, 34671), (889, 24063), (1651, 12957), (1851, 11557), (2667, 8021), (4319, 4953)]