30988900

素因数分解:

$2^2\times 5^2\times {\mathrm{431}}^1\times {\mathrm{719}}^1$

素因数の和:1164

約数の個数: 36

約数和(自身を含む): 67495680

約数和(自身を除く): 36506780

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 431, 719, 862, 1438, 1724, 2155, 2876, 3595, 4310, 7190, 8620, 10775, 14380, 17975, 21550, 35950, 43100, 71900, 309889, 619778, 1239556, 1549445, 3098890, 6197780, 7747225, 15494450, 30988900]

約数ペア:

[(1, 30988900), (2, 15494450), (4, 7747225), (5, 6197780), (10, 3098890), (20, 1549445), (25, 1239556), (50, 619778), (100, 309889), (431, 71900), (719, 43100), (862, 35950), (1438, 21550), (1724, 17975), (2155, 14380), (2876, 10775), (3595, 8620), (4310, 7190)]