21037030

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{757}}^1$

素因数の和:1168

約数の個数: 32

約数和(自身を含む): 43442496

約数和(自身を除く): 22405466

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 397, 757, 794, 1514, 1985, 2779, 3785, 3970, 5299, 5558, 7570, 10598, 13895, 26495, 27790, 52990, 300529, 601058, 1502645, 2103703, 3005290, 4207406, 10518515, 21037030]

約数ペア:

[(1, 21037030), (2, 10518515), (5, 4207406), (7, 3005290), (10, 2103703), (14, 1502645), (35, 601058), (70, 300529), (397, 52990), (757, 27790), (794, 26495), (1514, 13895), (1985, 10598), (2779, 7570), (3785, 5558), (3970, 5299)]