19880575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 29748096

約数和(自身を除く): 9867521

約数列:

[1, 5, 11, 13, 25, 55, 65, 67, 83, 143, 275, 325, 335, 415, 715, 737, 871, 913, 1079, 1675, 2075, 3575, 3685, 4355, 4565, 5395, 5561, 9581, 11869, 18425, 21775, 22825, 26975, 27805, 47905, 59345, 61171, 72293, 139025, 239525, 296725, 305855, 361465, 795223, 1529275, 1807325, 3976115, 19880575]

約数ペア:

[(1, 19880575), (5, 3976115), (11, 1807325), (13, 1529275), (25, 795223), (55, 361465), (65, 305855), (67, 296725), (83, 239525), (143, 139025), (275, 72293), (325, 61171), (335, 59345), (415, 47905), (715, 27805), (737, 26975), (871, 22825), (913, 21775), (1079, 18425), (1675, 11869), (2075, 9581), (3575, 5561), (3685, 5395), (4355, 4565)]