21236290

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{223}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 17954750

約数列:

[1, 2, 5, 10, 89, 107, 178, 214, 223, 445, 446, 535, 890, 1070, 1115, 2230, 9523, 19046, 19847, 23861, 39694, 47615, 47722, 95230, 99235, 119305, 198470, 238610, 2123629, 4247258, 10618145, 21236290]

約数ペア:

[(1, 21236290), (2, 10618145), (5, 4247258), (10, 2123629), (89, 238610), (107, 198470), (178, 119305), (214, 99235), (223, 95230), (445, 47722), (446, 47615), (535, 39694), (890, 23861), (1070, 19847), (1115, 19046), (2230, 9523)]