257587920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2731}}^1$

素因数の和:2881

約数の個数: 120

約数和(自身を含む): 871988832

約数和(自身を除く): 614400912

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 131, 144, 180, 240, 262, 360, 393, 524, 655, 720, 786, 1048, 1179, 1310, 1572, 1965, 2096, 2358, 2620, 2731, 3144, 3930, 4716, 5240, 5462, 5895, 6288, 7860, 8193, 9432, 10480, 10924, 11790, 13655, 15720, 16386, 18864, 21848, 23580, 24579, 27310, 31440, 32772, 40965, 43696, 47160, 49158, 54620, 65544, 81930, 94320, 98316, 109240, 122895, 131088, 163860, 196632, 218480, 245790, 327720, 357761, 393264, 491580, 655440, 715522, 983160, 1073283, 1431044, 1788805, 1966320, 2146566, 2862088, 3219849, 3577610, 4293132, 5366415, 5724176, 6439698, 7155220, 8586264, 10732830, 12879396, 14310440, 16099245, 17172528, 21465660, 25758792, 28620880, 32198490, 42931320, 51517584, 64396980, 85862640, 128793960, 257587920]

約数ペア:

[(1, 257587920), (2, 128793960), (3, 85862640), (4, 64396980), (5, 51517584), (6, 42931320), (8, 32198490), (9, 28620880), (10, 25758792), (12, 21465660), (15, 17172528), (16, 16099245), (18, 14310440), (20, 12879396), (24, 10732830), (30, 8586264), (36, 7155220), (40, 6439698), (45, 5724176), (48, 5366415), (60, 4293132), (72, 3577610), (80, 3219849), (90, 2862088), (120, 2146566), (131, 1966320), (144, 1788805), (180, 1431044), (240, 1073283), (262, 983160), (360, 715522), (393, 655440), (524, 491580), (655, 393264), (720, 357761), (786, 327720), (1048, 245790), (1179, 218480), (1310, 196632), (1572, 163860), (1965, 131088), (2096, 122895), (2358, 109240), (2620, 98316), (2731, 94320), (3144, 81930), (3930, 65544), (4716, 54620), (5240, 49158), (5462, 47160), (5895, 43696), (6288, 40965), (7860, 32772), (8193, 31440), (9432, 27310), (10480, 24579), (10924, 23580), (11790, 21848), (13655, 18864), (15720, 16386)]