21149060

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{149}}^1\times {\mathrm{151}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24815740

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 149, 151, 188, 235, 298, 302, 470, 596, 604, 745, 755, 940, 1490, 1510, 2980, 3020, 7003, 7097, 14006, 14194, 22499, 28012, 28388, 35015, 35485, 44998, 70030, 70970, 89996, 112495, 140060, 141940, 224990, 449980, 1057453, 2114906, 4229812, 5287265, 10574530, 21149060]

約数ペア:

[(1, 21149060), (2, 10574530), (4, 5287265), (5, 4229812), (10, 2114906), (20, 1057453), (47, 449980), (94, 224990), (149, 141940), (151, 140060), (188, 112495), (235, 89996), (298, 70970), (302, 70030), (470, 44998), (596, 35485), (604, 35015), (745, 28388), (755, 28012), (940, 22499), (1490, 14194), (1510, 14006), (2980, 7097), (3020, 7003)]