21638518

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1231}}^1$

素因数の和:1308

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 16681610

約数列:

[1, 2, 11, 17, 22, 34, 47, 94, 187, 374, 517, 799, 1034, 1231, 1598, 2462, 8789, 13541, 17578, 20927, 27082, 41854, 57857, 115714, 230197, 460394, 636427, 983569, 1272854, 1967138, 10819259, 21638518]

約数ペア:

[(1, 21638518), (2, 10819259), (11, 1967138), (17, 1272854), (22, 983569), (34, 636427), (47, 460394), (94, 230197), (187, 115714), (374, 57857), (517, 41854), (799, 27082), (1034, 20927), (1231, 17578), (1598, 13541), (2462, 8789)]