20200401

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{233}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 34257600

約数和(自身を除く): 14057199

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 169, 171, 233, 247, 351, 507, 513, 699, 741, 1521, 2097, 2223, 3029, 3211, 4427, 4563, 6291, 6669, 9087, 9633, 13281, 27261, 28899, 39377, 39843, 57551, 81783, 86697, 118131, 119529, 172653, 354393, 517959, 748163, 1063179, 1553877, 2244489, 6733467, 20200401]

約数ペア:

[(1, 20200401), (3, 6733467), (9, 2244489), (13, 1553877), (19, 1063179), (27, 748163), (39, 517959), (57, 354393), (117, 172653), (169, 119529), (171, 118131), (233, 86697), (247, 81783), (351, 57551), (507, 39843), (513, 39377), (699, 28899), (741, 27261), (1521, 13281), (2097, 9633), (2223, 9087), (3029, 6669), (3211, 6291), (4427, 4563)]