638994225

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{10937}}^1$

素因数の和:11010

約数の個数: 48

約数和(自身を含む): 1139302080

約数和(自身を除く): 500307855

約数列:

[1, 3, 5, 15, 19, 25, 41, 57, 75, 95, 123, 205, 285, 475, 615, 779, 1025, 1425, 2337, 3075, 3895, 10937, 11685, 19475, 32811, 54685, 58425, 164055, 207803, 273425, 448417, 623409, 820275, 1039015, 1345251, 2242085, 3117045, 5195075, 6726255, 8519923, 11210425, 15585225, 25559769, 33631275, 42599615, 127798845, 212998075, 638994225]

約数ペア:

[(1, 638994225), (3, 212998075), (5, 127798845), (15, 42599615), (19, 33631275), (25, 25559769), (41, 15585225), (57, 11210425), (75, 8519923), (95, 6726255), (123, 5195075), (205, 3117045), (285, 2242085), (475, 1345251), (615, 1039015), (779, 820275), (1025, 623409), (1425, 448417), (2337, 273425), (3075, 207803), (3895, 164055), (10937, 58425), (11685, 54685), (19475, 32811)]