21166880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18899}}^1$

素因数の和:18921

約数の個数: 48

約数和(自身を含む): 57153600

約数和(自身を除く): 35986720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18899, 37798, 75596, 94495, 132293, 151192, 188990, 264586, 302384, 377980, 529172, 604768, 661465, 755960, 1058344, 1322930, 1511920, 2116688, 2645860, 3023840, 4233376, 5291720, 10583440, 21166880]

約数ペア:

[(1, 21166880), (2, 10583440), (4, 5291720), (5, 4233376), (7, 3023840), (8, 2645860), (10, 2116688), (14, 1511920), (16, 1322930), (20, 1058344), (28, 755960), (32, 661465), (35, 604768), (40, 529172), (56, 377980), (70, 302384), (80, 264586), (112, 188990), (140, 151192), (160, 132293), (224, 94495), (280, 75596), (560, 37798), (1120, 18899)]