21646864

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{997}}^1$

素因数の和:1087

約数の個数: 40

約数和(自身を含む): 44550720

約数和(自身を除く): 22903856

約数列:

[1, 2, 4, 8, 16, 23, 46, 59, 92, 118, 184, 236, 368, 472, 944, 997, 1357, 1994, 2714, 3988, 5428, 7976, 10856, 15952, 21712, 22931, 45862, 58823, 91724, 117646, 183448, 235292, 366896, 470584, 941168, 1352929, 2705858, 5411716, 10823432, 21646864]

約数ペア:

[(1, 21646864), (2, 10823432), (4, 5411716), (8, 2705858), (16, 1352929), (23, 941168), (46, 470584), (59, 366896), (92, 235292), (118, 183448), (184, 117646), (236, 91724), (368, 58823), (472, 45862), (944, 22931), (997, 21712), (1357, 15952), (1994, 10856), (2714, 7976), (3988, 5428)]