123650480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81349}}^1$

素因数の和:81381

約数の個数: 40

約数和(自身を含む): 302622000

約数和(自身を除く): 178971520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 81349, 162698, 325396, 406745, 650792, 813490, 1301584, 1545631, 1626980, 3091262, 3253960, 6182524, 6507920, 7728155, 12365048, 15456310, 24730096, 30912620, 61825240, 123650480]

約数ペア:

[(1, 123650480), (2, 61825240), (4, 30912620), (5, 24730096), (8, 15456310), (10, 12365048), (16, 7728155), (19, 6507920), (20, 6182524), (38, 3253960), (40, 3091262), (76, 1626980), (80, 1545631), (95, 1301584), (152, 813490), (190, 650792), (304, 406745), (380, 325396), (760, 162698), (1520, 81349)]