21258790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{3659}}^1$

素因数の和:3756

約数の個数: 32

約数和(自身を含む): 44271360

約数和(自身を除く): 23012570

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 83, 166, 415, 581, 830, 1162, 2905, 3659, 5810, 7318, 18295, 25613, 36590, 51226, 128065, 256130, 303697, 607394, 1518485, 2125879, 3036970, 4251758, 10629395, 21258790]

約数ペア:

[(1, 21258790), (2, 10629395), (5, 4251758), (7, 3036970), (10, 2125879), (14, 1518485), (35, 607394), (70, 303697), (83, 256130), (166, 128065), (415, 51226), (581, 36590), (830, 25613), (1162, 18295), (2905, 7318), (3659, 5810)]