21000295696

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9442579}}^1$

素因数の和:9442726

約数の個数: 20

約数和(自身を含む): 40980797200

約数和(自身を除く): 19980501504

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9442579, 18885158, 37770316, 75540632, 151081264, 1312518481, 2625036962, 5250073924, 10500147848, 21000295696]

約数ペア:

[(1, 21000295696), (2, 10500147848), (4, 5250073924), (8, 2625036962), (16, 1312518481), (139, 151081264), (278, 75540632), (556, 37770316), (1112, 18885158), (2224, 9442579)]