401365280

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{18047}}^1$

素因数の和:18201

約数の個数: 48

約数和(自身を含む): 955100160

約数和(自身を除く): 553734880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1390, 2224, 2780, 4448, 5560, 11120, 18047, 22240, 36094, 72188, 90235, 144376, 180470, 288752, 360940, 577504, 721880, 1443760, 2508533, 2887520, 5017066, 10034132, 12542665, 20068264, 25085330, 40136528, 50170660, 80273056, 100341320, 200682640, 401365280]

約数ペア:

[(1, 401365280), (2, 200682640), (4, 100341320), (5, 80273056), (8, 50170660), (10, 40136528), (16, 25085330), (20, 20068264), (32, 12542665), (40, 10034132), (80, 5017066), (139, 2887520), (160, 2508533), (278, 1443760), (556, 721880), (695, 577504), (1112, 360940), (1390, 288752), (2224, 180470), (2780, 144376), (4448, 90235), (5560, 72188), (11120, 36094), (18047, 22240)]