21278049380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{599}}^1\times {\mathrm{253733}}^1$

素因数の和:254348

約数の個数: 48

約数和(自身を含む): 51152774400

約数和(自身を除く): 29874725020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 599, 1198, 2396, 2995, 4193, 5990, 8386, 11980, 16772, 20965, 41930, 83860, 253733, 507466, 1014932, 1268665, 1776131, 2537330, 3552262, 5074660, 7104524, 8880655, 17761310, 35522620, 151986067, 303972134, 607944268, 759930335, 1063902469, 1519860670, 2127804938, 3039721340, 4255609876, 5319512345, 10639024690, 21278049380]

約数ペア:

[(1, 21278049380), (2, 10639024690), (4, 5319512345), (5, 4255609876), (7, 3039721340), (10, 2127804938), (14, 1519860670), (20, 1063902469), (28, 759930335), (35, 607944268), (70, 303972134), (140, 151986067), (599, 35522620), (1198, 17761310), (2396, 8880655), (2995, 7104524), (4193, 5074660), (5990, 3552262), (8386, 2537330), (11980, 1776131), (16772, 1268665), (20965, 1014932), (41930, 507466), (83860, 253733)]