420920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{619}}^1$

素因数の和:647

約数の個数: 32

約数和(自身を含む): 1004400

約数和(自身を除く): 583480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 619, 680, 1238, 2476, 3095, 4952, 6190, 10523, 12380, 21046, 24760, 42092, 52615, 84184, 105230, 210460, 420920]

約数ペア:

[(1, 420920), (2, 210460), (4, 105230), (5, 84184), (8, 52615), (10, 42092), (17, 24760), (20, 21046), (34, 12380), (40, 10523), (68, 6190), (85, 4952), (136, 3095), (170, 2476), (340, 1238), (619, 680)]