84869240

素因数分解:

$2^3\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2141}}^1$

素因数の和:3143

約数の個数: 32

約数和(自身を含む): 191237760

約数和(自身を除く): 106368520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 991, 1982, 2141, 3964, 4282, 4955, 7928, 8564, 9910, 10705, 17128, 19820, 21410, 39640, 42820, 85640, 2121731, 4243462, 8486924, 10608655, 16973848, 21217310, 42434620, 84869240]

約数ペア:

[(1, 84869240), (2, 42434620), (4, 21217310), (5, 16973848), (8, 10608655), (10, 8486924), (20, 4243462), (40, 2121731), (991, 85640), (1982, 42820), (2141, 39640), (3964, 21410), (4282, 19820), (4955, 17128), (7928, 10705), (8564, 9910)]