21127240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27799}}^1$

素因数の和:27829

約数の個数: 32

約数和(自身を含む): 50040000

約数和(自身を除く): 28912760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27799, 55598, 111196, 138995, 222392, 277990, 528181, 555980, 1056362, 1111960, 2112724, 2640905, 4225448, 5281810, 10563620, 21127240]

約数ペア:

[(1, 21127240), (2, 10563620), (4, 5281810), (5, 4225448), (8, 2640905), (10, 2112724), (19, 1111960), (20, 1056362), (38, 555980), (40, 528181), (76, 277990), (95, 222392), (152, 138995), (190, 111196), (380, 55598), (760, 27799)]