21275600

素因数分解:

$2^4\times 5^2\times {\mathrm{53189}}^1$

素因数の和:53207

約数の個数: 30

約数和(自身を含む): 51115590

約数和(自身を除く): 29839990

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 53189, 106378, 212756, 265945, 425512, 531890, 851024, 1063780, 1329725, 2127560, 2659450, 4255120, 5318900, 10637800, 21275600]

約数ペア:

[(1, 21275600), (2, 10637800), (4, 5318900), (5, 4255120), (8, 2659450), (10, 2127560), (16, 1329725), (20, 1063780), (25, 851024), (40, 531890), (50, 425512), (80, 265945), (100, 212756), (200, 106378), (400, 53189)]