40824280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{691}}^1$

素因数の和:920

約数の個数: 64

約数和(自身を含む): 105626880

約数和(自身を除く): 64802600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 422, 691, 844, 1055, 1382, 1477, 1688, 2110, 2764, 2954, 3455, 4220, 4837, 5528, 5908, 6910, 7385, 8440, 9674, 11816, 13820, 14770, 19348, 24185, 27640, 29540, 38696, 48370, 59080, 96740, 145801, 193480, 291602, 583204, 729005, 1020607, 1166408, 1458010, 2041214, 2916020, 4082428, 5103035, 5832040, 8164856, 10206070, 20412140, 40824280]

約数ペア:

[(1, 40824280), (2, 20412140), (4, 10206070), (5, 8164856), (7, 5832040), (8, 5103035), (10, 4082428), (14, 2916020), (20, 2041214), (28, 1458010), (35, 1166408), (40, 1020607), (56, 729005), (70, 583204), (140, 291602), (211, 193480), (280, 145801), (422, 96740), (691, 59080), (844, 48370), (1055, 38696), (1382, 29540), (1477, 27640), (1688, 24185), (2110, 19348), (2764, 14770), (2954, 13820), (3455, 11816), (4220, 9674), (4837, 8440), (5528, 7385), (5908, 6910)]