202110020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{20333}}^1$

素因数の和:20420

約数の個数: 48

約数和(自身を含む): 491920128

約数和(自身を除く): 289810108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 20333, 40666, 81332, 101665, 142331, 203330, 284662, 406660, 569324, 711655, 1423310, 1443643, 2846620, 2887286, 5774572, 7218215, 10105501, 14436430, 20211002, 28872860, 40422004, 50527505, 101055010, 202110020]

約数ペア:

[(1, 202110020), (2, 101055010), (4, 50527505), (5, 40422004), (7, 28872860), (10, 20211002), (14, 14436430), (20, 10105501), (28, 7218215), (35, 5774572), (70, 2887286), (71, 2846620), (140, 1443643), (142, 1423310), (284, 711655), (355, 569324), (497, 406660), (710, 284662), (994, 203330), (1420, 142331), (1988, 101665), (2485, 81332), (4970, 40666), (9940, 20333)]