20769040

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2917}}^1$

素因数の和:3019

約数の個数: 40

約数和(自身を含む): 48847320

約数和(自身を除く): 28078280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 2917, 3560, 5834, 7120, 11668, 14585, 23336, 29170, 46672, 58340, 116680, 233360, 259613, 519226, 1038452, 1298065, 2076904, 2596130, 4153808, 5192260, 10384520, 20769040]

約数ペア:

[(1, 20769040), (2, 10384520), (4, 5192260), (5, 4153808), (8, 2596130), (10, 2076904), (16, 1298065), (20, 1038452), (40, 519226), (80, 259613), (89, 233360), (178, 116680), (356, 58340), (445, 46672), (712, 29170), (890, 23336), (1424, 14585), (1780, 11668), (2917, 7120), (3560, 5834)]