217890231

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{1367}}^1$

素因数の和:1511

約数の個数: 32

約数和(自身を含む): 322979328

約数和(自身を除く): 105089097

約数列:

[1, 3, 13, 39, 61, 67, 183, 201, 793, 871, 1367, 2379, 2613, 4087, 4101, 12261, 17771, 53131, 53313, 83387, 91589, 159393, 250161, 274767, 1084031, 1190657, 3252093, 3571971, 5586929, 16760787, 72630077, 217890231]

約数ペア:

[(1, 217890231), (3, 72630077), (13, 16760787), (39, 5586929), (61, 3571971), (67, 3252093), (183, 1190657), (201, 1084031), (793, 274767), (871, 250161), (1367, 159393), (2379, 91589), (2613, 83387), (4087, 53313), (4101, 53131), (12261, 17771)]