215549840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{244943}}^1$

素因数の和:244967

約数の個数: 40

約数和(自身を含む): 546715008

約数和(自身を除く): 331165168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 244943, 489886, 979772, 1224715, 1959544, 2449430, 2694373, 3919088, 4898860, 5388746, 9797720, 10777492, 13471865, 19595440, 21554984, 26943730, 43109968, 53887460, 107774920, 215549840]

約数ペア:

[(1, 215549840), (2, 107774920), (4, 53887460), (5, 43109968), (8, 26943730), (10, 21554984), (11, 19595440), (16, 13471865), (20, 10777492), (22, 9797720), (40, 5388746), (44, 4898860), (55, 3919088), (80, 2694373), (88, 2449430), (110, 1959544), (176, 1224715), (220, 979772), (440, 489886), (880, 244943)]