21551177975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{188261}}^1$

素因数の和:188531

約数の個数: 24

約数和(自身を含む): 28246830480

約数和(自身を除く): 6695652505

約数列:

[1, 5, 19, 25, 95, 241, 475, 1205, 4579, 6025, 22895, 114475, 188261, 941305, 3576959, 4706525, 17884795, 45370901, 89423975, 226854505, 862047119, 1134272525, 4310235595, 21551177975]

約数ペア:

[(1, 21551177975), (5, 4310235595), (19, 1134272525), (25, 862047119), (95, 226854505), (241, 89423975), (475, 45370901), (1205, 17884795), (4579, 4706525), (6025, 3576959), (22895, 941305), (114475, 188261)]