7821160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 19051200

約数和(自身を除く): 11230040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 251, 328, 380, 410, 502, 760, 779, 820, 1004, 1255, 1558, 1640, 2008, 2510, 3116, 3895, 4769, 5020, 6232, 7790, 9538, 10040, 10291, 15580, 19076, 20582, 23845, 31160, 38152, 41164, 47690, 51455, 82328, 95380, 102910, 190760, 195529, 205820, 391058, 411640, 782116, 977645, 1564232, 1955290, 3910580, 7821160]

約数ペア:

[(1, 7821160), (2, 3910580), (4, 1955290), (5, 1564232), (8, 977645), (10, 782116), (19, 411640), (20, 391058), (38, 205820), (40, 195529), (41, 190760), (76, 102910), (82, 95380), (95, 82328), (152, 51455), (164, 47690), (190, 41164), (205, 38152), (251, 31160), (328, 23845), (380, 20582), (410, 19076), (502, 15580), (760, 10291), (779, 10040), (820, 9538), (1004, 7790), (1255, 6232), (1558, 5020), (1640, 4769), (2008, 3895), (2510, 3116)]