21385190

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1213}}^1$

素因数の和:1304

約数の個数: 32

約数和(自身を含む): 40382496

約数和(自身を除く): 18997306

約数列:

[1, 2, 5, 10, 41, 43, 82, 86, 205, 215, 410, 430, 1213, 1763, 2426, 3526, 6065, 8815, 12130, 17630, 49733, 52159, 99466, 104318, 248665, 260795, 497330, 521590, 2138519, 4277038, 10692595, 21385190]

約数ペア:

[(1, 21385190), (2, 10692595), (5, 4277038), (10, 2138519), (41, 521590), (43, 497330), (82, 260795), (86, 248665), (205, 104318), (215, 99466), (410, 52159), (430, 49733), (1213, 17630), (1763, 12130), (2426, 8815), (3526, 6065)]