21334790

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{199}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 18063610

約数列:

[1, 2, 5, 10, 71, 142, 151, 199, 302, 355, 398, 710, 755, 995, 1510, 1990, 10721, 14129, 21442, 28258, 30049, 53605, 60098, 70645, 107210, 141290, 150245, 300490, 2133479, 4266958, 10667395, 21334790]

約数ペア:

[(1, 21334790), (2, 10667395), (5, 4266958), (10, 2133479), (71, 300490), (142, 150245), (151, 141290), (199, 107210), (302, 70645), (355, 60098), (398, 53605), (710, 30049), (755, 28258), (995, 21442), (1510, 14129), (1990, 10721)]