81896240

素因数分解:

$2^4\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1033}}^1$

素因数の和:2037

約数の個数: 40

約数和(自身を含む): 190785408

約数和(自身を除く): 108889168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 991, 1033, 1982, 2066, 3964, 4132, 4955, 5165, 7928, 8264, 9910, 10330, 15856, 16528, 19820, 20660, 39640, 41320, 79280, 82640, 1023703, 2047406, 4094812, 5118515, 8189624, 10237030, 16379248, 20474060, 40948120, 81896240]

約数ペア:

[(1, 81896240), (2, 40948120), (4, 20474060), (5, 16379248), (8, 10237030), (10, 8189624), (16, 5118515), (20, 4094812), (40, 2047406), (80, 1023703), (991, 82640), (1033, 79280), (1982, 41320), (2066, 39640), (3964, 20660), (4132, 19820), (4955, 16528), (5165, 15856), (7928, 10330), (8264, 9910)]