21874293

素因数分解:

$3^4\times 7^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:415

約数の個数: 40

約数和(自身を含む): 37728768

約数和(自身を除く): 15854475

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 173, 189, 223, 519, 567, 669, 1211, 1557, 1561, 2007, 3633, 4671, 4683, 6021, 10899, 14013, 14049, 18063, 32697, 38579, 42147, 98091, 115737, 126441, 270053, 347211, 810159, 1041633, 2430477, 3124899, 7291431, 21874293]

約数ペア:

[(1, 21874293), (3, 7291431), (7, 3124899), (9, 2430477), (21, 1041633), (27, 810159), (63, 347211), (81, 270053), (173, 126441), (189, 115737), (223, 98091), (519, 42147), (567, 38579), (669, 32697), (1211, 18063), (1557, 14049), (1561, 14013), (2007, 10899), (3633, 6021), (4671, 4683)]