777777975

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1913}}^1$

素因数の和:2081

約数の個数: 72

約数和(自身を含む): 1511830320

約数和(自身を除く): 734052345

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 139, 195, 225, 325, 417, 585, 695, 975, 1251, 1807, 1913, 2085, 2925, 3475, 5421, 5739, 6255, 9035, 9565, 10425, 16263, 17217, 24869, 27105, 28695, 31275, 45175, 47825, 74607, 81315, 86085, 124345, 135525, 143475, 223821, 265907, 373035, 406575, 430425, 621725, 797721, 1119105, 1329535, 1865175, 2393163, 3456791, 3988605, 5595525, 6647675, 10370373, 11965815, 17283955, 19943025, 31111119, 51851865, 59829075, 86419775, 155555595, 259259325, 777777975]

約数ペア:

[(1, 777777975), (3, 259259325), (5, 155555595), (9, 86419775), (13, 59829075), (15, 51851865), (25, 31111119), (39, 19943025), (45, 17283955), (65, 11965815), (75, 10370373), (117, 6647675), (139, 5595525), (195, 3988605), (225, 3456791), (325, 2393163), (417, 1865175), (585, 1329535), (695, 1119105), (975, 797721), (1251, 621725), (1807, 430425), (1913, 406575), (2085, 373035), (2925, 265907), (3475, 223821), (5421, 143475), (5739, 135525), (6255, 124345), (9035, 86085), (9565, 81315), (10425, 74607), (16263, 47825), (17217, 45175), (24869, 31275), (27105, 28695)]