61609820

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{7919}}^1$

素因数の和:8317

約数の個数: 24

約数和(自身を含む): 129729600

約数和(自身を除く): 68119780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 7919, 15838, 31676, 39595, 79190, 158380, 3080491, 6160982, 12321964, 15402455, 30804910, 61609820]

約数ペア:

[(1, 61609820), (2, 30804910), (4, 15402455), (5, 12321964), (10, 6160982), (20, 3080491), (389, 158380), (778, 79190), (1556, 39595), (1945, 31676), (3890, 15838), (7780, 7919)]