21006504

素因数分解:

$2^3\times 3^2\times {\mathrm{197}}^1\times {\mathrm{1481}}^1$

素因数の和:1690

約数の個数: 48

約数和(自身を含む): 57220020

約数和(自身を除く): 36213516

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 197, 394, 591, 788, 1182, 1481, 1576, 1773, 2364, 2962, 3546, 4443, 4728, 5924, 7092, 8886, 11848, 13329, 14184, 17772, 26658, 35544, 53316, 106632, 291757, 583514, 875271, 1167028, 1750542, 2334056, 2625813, 3501084, 5251626, 7002168, 10503252, 21006504]

約数ペア:

[(1, 21006504), (2, 10503252), (3, 7002168), (4, 5251626), (6, 3501084), (8, 2625813), (9, 2334056), (12, 1750542), (18, 1167028), (24, 875271), (36, 583514), (72, 291757), (197, 106632), (394, 53316), (591, 35544), (788, 26658), (1182, 17772), (1481, 14184), (1576, 13329), (1773, 11848), (2364, 8886), (2962, 7092), (3546, 5924), (4443, 4728)]