21903550

素因数分解:

$2^1\times 5^2\times {\mathrm{109}}^1\times {\mathrm{4019}}^1$

素因数の和:4140

約数の個数: 24

約数和(自身を含む): 41124600

約数和(自身を除く): 19221050

約数列:

[1, 2, 5, 10, 25, 50, 109, 218, 545, 1090, 2725, 4019, 5450, 8038, 20095, 40190, 100475, 200950, 438071, 876142, 2190355, 4380710, 10951775, 21903550]

約数ペア:

[(1, 21903550), (2, 10951775), (5, 4380710), (10, 2190355), (25, 876142), (50, 438071), (109, 200950), (218, 100475), (545, 40190), (1090, 20095), (2725, 8038), (4019, 5450)]