389924975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{863}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 555393024

約数和(自身を除く): 165468049

約数列:

[1, 5, 11, 25, 31, 53, 55, 155, 265, 275, 341, 583, 775, 863, 1325, 1643, 1705, 2915, 4315, 8215, 8525, 9493, 14575, 18073, 21575, 26753, 41075, 45739, 47465, 90365, 133765, 228695, 237325, 294283, 451825, 503129, 668825, 1143475, 1417909, 1471415, 2515645, 7089545, 7357075, 12578225, 15596999, 35447725, 77984995, 389924975]

約数ペア:

[(1, 389924975), (5, 77984995), (11, 35447725), (25, 15596999), (31, 12578225), (53, 7357075), (55, 7089545), (155, 2515645), (265, 1471415), (275, 1417909), (341, 1143475), (583, 668825), (775, 503129), (863, 451825), (1325, 294283), (1643, 237325), (1705, 228695), (2915, 133765), (4315, 90365), (8215, 47465), (8525, 45739), (9493, 41075), (14575, 26753), (18073, 21575)]