19689725

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:338

約数の個数: 36

約数和(自身を含む): 28102368

約数和(自身を除く): 8412643

約数列:

[1, 5, 11, 23, 25, 55, 115, 121, 253, 275, 283, 575, 605, 1265, 1415, 2783, 3025, 3113, 6325, 6509, 7075, 13915, 15565, 32545, 34243, 69575, 71599, 77825, 162725, 171215, 357995, 787589, 856075, 1789975, 3937945, 19689725]

約数ペア:

[(1, 19689725), (5, 3937945), (11, 1789975), (23, 856075), (25, 787589), (55, 357995), (115, 171215), (121, 162725), (253, 77825), (275, 71599), (283, 69575), (575, 34243), (605, 32545), (1265, 15565), (1415, 13915), (2783, 7075), (3025, 6509), (3113, 6325)]