278648721

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{773}}^1$

素因数の和:887

約数の個数: 48

約数和(自身を含む): 453254400

約数和(自身を除く): 174605679

約数列:

[1, 3, 9, 13, 27, 39, 79, 117, 169, 237, 351, 507, 711, 773, 1027, 1521, 2133, 2319, 3081, 4563, 6957, 9243, 10049, 13351, 20871, 27729, 30147, 40053, 61067, 90441, 120159, 130637, 183201, 271323, 360477, 391911, 549603, 793871, 1175733, 1648809, 2381613, 3527199, 7144839, 10320323, 21434517, 30960969, 92882907, 278648721]

約数ペア:

[(1, 278648721), (3, 92882907), (9, 30960969), (13, 21434517), (27, 10320323), (39, 7144839), (79, 3527199), (117, 2381613), (169, 1648809), (237, 1175733), (351, 793871), (507, 549603), (711, 391911), (773, 360477), (1027, 271323), (1521, 183201), (2133, 130637), (2319, 120159), (3081, 90441), (4563, 61067), (6957, 40053), (9243, 30147), (10049, 27729), (13351, 20871)]