21796775

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1$

素因数の和:121

約数の個数: 72

約数和(自身を含む): 37033344

約数和(自身を除く): 15236569

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 67, 77, 91, 143, 169, 175, 275, 325, 335, 385, 455, 469, 715, 737, 845, 871, 1001, 1183, 1675, 1859, 1925, 2275, 2345, 3575, 3685, 4225, 4355, 5005, 5159, 5915, 6097, 9295, 9581, 11323, 11725, 13013, 18425, 21775, 25025, 25795, 29575, 30485, 46475, 47905, 56615, 65065, 67067, 79261, 124553, 128975, 152425, 239525, 283075, 325325, 335335, 396305, 622765, 871871, 1676675, 1981525, 3113825, 4359355, 21796775]

約数ペア:

[(1, 21796775), (5, 4359355), (7, 3113825), (11, 1981525), (13, 1676675), (25, 871871), (35, 622765), (55, 396305), (65, 335335), (67, 325325), (77, 283075), (91, 239525), (143, 152425), (169, 128975), (175, 124553), (275, 79261), (325, 67067), (335, 65065), (385, 56615), (455, 47905), (469, 46475), (715, 30485), (737, 29575), (845, 25795), (871, 25025), (1001, 21775), (1183, 18425), (1675, 13013), (1859, 11725), (1925, 11323), (2275, 9581), (2345, 9295), (3575, 6097), (3685, 5915), (4225, 5159), (4355, 5005)]