1287996875

素因数分解:

$5^5\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 1780198560

約数和(自身を除く): 492201685

約数列:

[1, 5, 11, 25, 55, 89, 125, 275, 421, 445, 625, 979, 1375, 2105, 2225, 3125, 4631, 4895, 6875, 10525, 11125, 23155, 24475, 34375, 37469, 52625, 55625, 115775, 122375, 187345, 263125, 278125, 412159, 578875, 611875, 936725, 1315625, 2060795, 2894375, 3059375, 4683625, 10303975, 14471875, 23418125, 51519875, 117090625, 257599375, 1287996875]

約数ペア:

[(1, 1287996875), (5, 257599375), (11, 117090625), (25, 51519875), (55, 23418125), (89, 14471875), (125, 10303975), (275, 4683625), (421, 3059375), (445, 2894375), (625, 2060795), (979, 1315625), (1375, 936725), (2105, 611875), (2225, 578875), (3125, 412159), (4631, 278125), (4895, 263125), (6875, 187345), (10525, 122375), (11125, 115775), (23155, 55625), (24475, 52625), (34375, 37469)]