21695060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63809}}^1$

素因数の和:63835

約数の個数: 24

約数和(自身を含む): 48240360

約数和(自身を除く): 26545300

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63809, 127618, 255236, 319045, 638090, 1084753, 1276180, 2169506, 4339012, 5423765, 10847530, 21695060]

約数ペア:

[(1, 21695060), (2, 10847530), (4, 5423765), (5, 4339012), (10, 2169506), (17, 1276180), (20, 1084753), (34, 638090), (68, 319045), (85, 255236), (170, 127618), (340, 63809)]