21477375

素因数分解:

$3^2\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1123}}^1$

素因数の和:1161

約数の個数: 48

約数和(自身を含む): 41030496

約数和(自身を除く): 19553121

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 125, 153, 225, 255, 375, 425, 765, 1123, 1125, 1275, 2125, 3369, 3825, 5615, 6375, 10107, 16845, 19091, 19125, 28075, 50535, 57273, 84225, 95455, 140375, 171819, 252675, 286365, 421125, 477275, 859095, 1263375, 1431825, 2386375, 4295475, 7159125, 21477375]

約数ペア:

[(1, 21477375), (3, 7159125), (5, 4295475), (9, 2386375), (15, 1431825), (17, 1263375), (25, 859095), (45, 477275), (51, 421125), (75, 286365), (85, 252675), (125, 171819), (153, 140375), (225, 95455), (255, 84225), (375, 57273), (425, 50535), (765, 28075), (1123, 19125), (1125, 19091), (1275, 16845), (2125, 10107), (3369, 6375), (3825, 5615)]