20120863780

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7679719}}^1$

素因数の和:7679859

約数の個数: 24

約数和(自身を含む): 42576367680

約数和(自身を除く): 22455503900

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7679719, 15359438, 30718876, 38398595, 76797190, 153594380, 1006043189, 2012086378, 4024172756, 5030215945, 10060431890, 20120863780]

約数ペア:

[(1, 20120863780), (2, 10060431890), (4, 5030215945), (5, 4024172756), (10, 2012086378), (20, 1006043189), (131, 153594380), (262, 76797190), (524, 38398595), (655, 30718876), (1310, 15359438), (2620, 7679719)]