20211076880

素因数分解:

$2^4\times 5^1\times {\mathrm{3251}}^1\times {\mathrm{77711}}^1$

素因数の和:80975

約数の個数: 40

約数和(自身を含む): 47005812864

約数和(自身を除く): 26794735984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3251, 6502, 13004, 16255, 26008, 32510, 52016, 65020, 77711, 130040, 155422, 260080, 310844, 388555, 621688, 777110, 1243376, 1554220, 3108440, 6216880, 252638461, 505276922, 1010553844, 1263192305, 2021107688, 2526384610, 4042215376, 5052769220, 10105538440, 20211076880]

約数ペア:

[(1, 20211076880), (2, 10105538440), (4, 5052769220), (5, 4042215376), (8, 2526384610), (10, 2021107688), (16, 1263192305), (20, 1010553844), (40, 505276922), (80, 252638461), (3251, 6216880), (6502, 3108440), (13004, 1554220), (16255, 1243376), (26008, 777110), (32510, 621688), (52016, 388555), (65020, 310844), (77711, 260080), (130040, 155422)]