80004990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{205141}}^1$

素因数の和:205164

約数の個数: 32

約数和(自身を含む): 206783136

約数和(自身を除く): 126778146

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 205141, 410282, 615423, 1025705, 1230846, 2051410, 2666833, 3077115, 5333666, 6154230, 8000499, 13334165, 16000998, 26668330, 40002495, 80004990]

約数ペア:

[(1, 80004990), (2, 40002495), (3, 26668330), (5, 16000998), (6, 13334165), (10, 8000499), (13, 6154230), (15, 5333666), (26, 3077115), (30, 2666833), (39, 2051410), (65, 1230846), (78, 1025705), (130, 615423), (195, 410282), (390, 205141)]