2156825

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:86

約数の個数: 36

約数和(自身を含む): 3166464

約数和(自身を除く): 1009639

約数列:

[1, 5, 11, 23, 25, 31, 55, 115, 121, 155, 253, 275, 341, 575, 605, 713, 775, 1265, 1705, 2783, 3025, 3565, 3751, 6325, 7843, 8525, 13915, 17825, 18755, 39215, 69575, 86273, 93775, 196075, 431365, 2156825]

約数ペア:

[(1, 2156825), (5, 431365), (11, 196075), (23, 93775), (25, 86273), (31, 69575), (55, 39215), (115, 18755), (121, 17825), (155, 13915), (253, 8525), (275, 7843), (341, 6325), (575, 3751), (605, 3565), (713, 3025), (775, 2783), (1265, 1705)]