84787280

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19997}}^1$

素因数の和:20063

約数の個数: 40

約数和(自身を含む): 200859912

約数和(自身を除く): 116072632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 19997, 39994, 79988, 99985, 159976, 199970, 319952, 399940, 799880, 1059841, 1599760, 2119682, 4239364, 5299205, 8478728, 10598410, 16957456, 21196820, 42393640, 84787280]

約数ペア:

[(1, 84787280), (2, 42393640), (4, 21196820), (5, 16957456), (8, 10598410), (10, 8478728), (16, 5299205), (20, 4239364), (40, 2119682), (53, 1599760), (80, 1059841), (106, 799880), (212, 399940), (265, 319952), (424, 199970), (530, 159976), (848, 99985), (1060, 79988), (2120, 39994), (4240, 19997)]