31350440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1657}}^1$

素因数の和:1722

約数の個数: 64

約数和(自身を含む): 78788160

約数和(自身を除く): 47437720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 946, 1657, 1720, 1892, 2365, 3314, 3784, 4730, 6628, 8285, 9460, 13256, 16570, 18227, 18920, 33140, 36454, 66280, 71251, 72908, 91135, 142502, 145816, 182270, 285004, 356255, 364540, 570008, 712510, 729080, 783761, 1425020, 1567522, 2850040, 3135044, 3918805, 6270088, 7837610, 15675220, 31350440]

約数ペア:

[(1, 31350440), (2, 15675220), (4, 7837610), (5, 6270088), (8, 3918805), (10, 3135044), (11, 2850040), (20, 1567522), (22, 1425020), (40, 783761), (43, 729080), (44, 712510), (55, 570008), (86, 364540), (88, 356255), (110, 285004), (172, 182270), (215, 145816), (220, 142502), (344, 91135), (430, 72908), (440, 71251), (473, 66280), (860, 36454), (946, 33140), (1657, 18920), (1720, 18227), (1892, 16570), (2365, 13256), (3314, 9460), (3784, 8285), (4730, 6628)]