21608140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15217}}^1$

素因数の和:15297

約数の個数: 24

約数和(自身を含む): 46019232

約数和(自身を除く): 24411092

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 15217, 30434, 60868, 76085, 152170, 304340, 1080407, 2160814, 4321628, 5402035, 10804070, 21608140]

約数ペア:

[(1, 21608140), (2, 10804070), (4, 5402035), (5, 4321628), (10, 2160814), (20, 1080407), (71, 304340), (142, 152170), (284, 76085), (355, 60868), (710, 30434), (1420, 15217)]