20808960

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{5419}}^1$

素因数の和:5443

約数の個数: 72

約数和(自身を含む): 66470880

約数和(自身を除く): 45661920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 5419, 10838, 16257, 21676, 27095, 32514, 43352, 54190, 65028, 81285, 86704, 108380, 130056, 162570, 173408, 216760, 260112, 325140, 346816, 433520, 520224, 650280, 693632, 867040, 1040448, 1300560, 1387264, 1734080, 2080896, 2601120, 3468160, 4161792, 5202240, 6936320, 10404480, 20808960]

約数ペア:

[(1, 20808960), (2, 10404480), (3, 6936320), (4, 5202240), (5, 4161792), (6, 3468160), (8, 2601120), (10, 2080896), (12, 1734080), (15, 1387264), (16, 1300560), (20, 1040448), (24, 867040), (30, 693632), (32, 650280), (40, 520224), (48, 433520), (60, 346816), (64, 325140), (80, 260112), (96, 216760), (120, 173408), (128, 162570), (160, 130056), (192, 108380), (240, 86704), (256, 81285), (320, 65028), (384, 54190), (480, 43352), (640, 32514), (768, 27095), (960, 21676), (1280, 16257), (1920, 10838), (3840, 5419)]