218790715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{9871}}^1$

素因数の和:9931

約数の個数: 32

約数和(自身を含む): 318431232

約数和(自身を除く): 99640517

約数列:

[1, 5, 11, 13, 31, 55, 65, 143, 155, 341, 403, 715, 1705, 2015, 4433, 9871, 22165, 49355, 108581, 128323, 306001, 542905, 641615, 1411553, 1530005, 3366011, 3978013, 7057765, 16830055, 19890065, 43758143, 218790715]

約数ペア:

[(1, 218790715), (5, 43758143), (11, 19890065), (13, 16830055), (31, 7057765), (55, 3978013), (65, 3366011), (143, 1530005), (155, 1411553), (341, 641615), (403, 542905), (715, 306001), (1705, 128323), (2015, 108581), (4433, 49355), (9871, 22165)]