21037240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75133}}^1$

素因数の和:75151

約数の個数: 32

約数和(自身を含む): 54096480

約数和(自身を除く): 33059240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75133, 150266, 300532, 375665, 525931, 601064, 751330, 1051862, 1502660, 2103724, 2629655, 3005320, 4207448, 5259310, 10518620, 21037240]

約数ペア:

[(1, 21037240), (2, 10518620), (4, 5259310), (5, 4207448), (7, 3005320), (8, 2629655), (10, 2103724), (14, 1502660), (20, 1051862), (28, 751330), (35, 601064), (40, 525931), (56, 375665), (70, 300532), (140, 150266), (280, 75133)]