87511220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{106721}}^1$

素因数の和:106771

約数の個数: 24

約数和(自身を含む): 188257608

約数和(自身を除く): 100746388

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 106721, 213442, 426884, 533605, 1067210, 2134420, 4375561, 8751122, 17502244, 21877805, 43755610, 87511220]

約数ペア:

[(1, 87511220), (2, 43755610), (4, 21877805), (5, 17502244), (10, 8751122), (20, 4375561), (41, 2134420), (82, 1067210), (164, 533605), (205, 426884), (410, 213442), (820, 106721)]