21200361

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{983}}^1$

素因数の和:1085

約数の個数: 32

約数和(自身を含む): 35266560

約数和(自身を除く): 14066199

約数列:

[1, 3, 7, 13, 21, 39, 79, 91, 237, 273, 553, 983, 1027, 1659, 2949, 3081, 6881, 7189, 12779, 20643, 21567, 38337, 77657, 89453, 232971, 268359, 543599, 1009541, 1630797, 3028623, 7066787, 21200361]

約数ペア:

[(1, 21200361), (3, 7066787), (7, 3028623), (13, 1630797), (21, 1009541), (39, 543599), (79, 268359), (91, 232971), (237, 89453), (273, 77657), (553, 38337), (983, 21567), (1027, 20643), (1659, 12779), (2949, 7189), (3081, 6881)]