784179280

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{977}}^1$

素因数の和:1196

約数の個数: 80

約数和(自身を含む): 1862737920

約数和(自身を除く): 1078558640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 127, 158, 254, 316, 395, 508, 632, 635, 790, 977, 1016, 1264, 1270, 1580, 1954, 2032, 2540, 3160, 3908, 4885, 5080, 6320, 7816, 9770, 10033, 10160, 15632, 19540, 20066, 39080, 40132, 50165, 77183, 78160, 80264, 100330, 124079, 154366, 160528, 200660, 248158, 308732, 385915, 401320, 496316, 617464, 620395, 771830, 802640, 992632, 1234928, 1240790, 1543660, 1985264, 2481580, 3087320, 4963160, 6174640, 9802241, 9926320, 19604482, 39208964, 49011205, 78417928, 98022410, 156835856, 196044820, 392089640, 784179280]

約数ペア:

[(1, 784179280), (2, 392089640), (4, 196044820), (5, 156835856), (8, 98022410), (10, 78417928), (16, 49011205), (20, 39208964), (40, 19604482), (79, 9926320), (80, 9802241), (127, 6174640), (158, 4963160), (254, 3087320), (316, 2481580), (395, 1985264), (508, 1543660), (632, 1240790), (635, 1234928), (790, 992632), (977, 802640), (1016, 771830), (1264, 620395), (1270, 617464), (1580, 496316), (1954, 401320), (2032, 385915), (2540, 308732), (3160, 248158), (3908, 200660), (4885, 160528), (5080, 154366), (6320, 124079), (7816, 100330), (9770, 80264), (10033, 78160), (10160, 77183), (15632, 50165), (19540, 40132), (20066, 39080)]