1640243390

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{27749}}^1$

素因数の和:28036

約数の個数: 32

約数和(自身を含む): 3092904000

約数和(自身を除く): 1452660610

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 257, 514, 1285, 2570, 5911, 11822, 27749, 29555, 55498, 59110, 138745, 277490, 638227, 1276454, 3191135, 6382270, 7131493, 14262986, 35657465, 71314930, 164024339, 328048678, 820121695, 1640243390]

約数ペア:

[(1, 1640243390), (2, 820121695), (5, 328048678), (10, 164024339), (23, 71314930), (46, 35657465), (115, 14262986), (230, 7131493), (257, 6382270), (514, 3191135), (1285, 1276454), (2570, 638227), (5911, 277490), (11822, 138745), (27749, 59110), (29555, 55498)]