21512806

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:508

約数の個数: 32

約数和(自身を含む): 38154240

約数和(自身を除く): 16641434

約数列:

[1, 2, 7, 14, 53, 79, 106, 158, 367, 371, 553, 734, 742, 1106, 2569, 4187, 5138, 8374, 19451, 28993, 29309, 38902, 57986, 58618, 136157, 202951, 272314, 405902, 1536629, 3073258, 10756403, 21512806]

約数ペア:

[(1, 21512806), (2, 10756403), (7, 3073258), (14, 1536629), (53, 405902), (79, 272314), (106, 202951), (158, 136157), (367, 58618), (371, 57986), (553, 38902), (734, 29309), (742, 28993), (1106, 19451), (2569, 8374), (4187, 5138)]