20919639

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11255721

約数列:

[1, 3, 13, 17, 39, 51, 139, 221, 227, 417, 663, 681, 1807, 2363, 2951, 3859, 5421, 7089, 8853, 11577, 30719, 31553, 50167, 92157, 94659, 150501, 410189, 536401, 1230567, 1609203, 6973213, 20919639]

約数ペア:

[(1, 20919639), (3, 6973213), (13, 1609203), (17, 1230567), (39, 536401), (51, 410189), (139, 150501), (221, 94659), (227, 92157), (417, 50167), (663, 31553), (681, 30719), (1807, 11577), (2363, 8853), (2951, 7089), (3859, 5421)]