2018702975

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{223679}}^1$

素因数の和:223727

約数の個数: 18

約数和(自身を含む): 2641884480

約数和(自身を除く): 623181505

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 9025, 223679, 1118395, 4249901, 5591975, 21249505, 80748119, 106247525, 403740595, 2018702975]

約数ペア:

[(1, 2018702975), (5, 403740595), (19, 106247525), (25, 80748119), (95, 21249505), (361, 5591975), (475, 4249901), (1805, 1118395), (9025, 223679)]