81860080

素因数分解:

$2^4\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1567}}^1$

素因数の和:2233

約数の個数: 40

約数和(自身を含む): 190737792

約数和(自身を除く): 108877712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 653, 1306, 1567, 2612, 3134, 3265, 5224, 6268, 6530, 7835, 10448, 12536, 13060, 15670, 25072, 26120, 31340, 52240, 62680, 125360, 1023251, 2046502, 4093004, 5116255, 8186008, 10232510, 16372016, 20465020, 40930040, 81860080]

約数ペア:

[(1, 81860080), (2, 40930040), (4, 20465020), (5, 16372016), (8, 10232510), (10, 8186008), (16, 5116255), (20, 4093004), (40, 2046502), (80, 1023251), (653, 125360), (1306, 62680), (1567, 52240), (2612, 31340), (3134, 26120), (3265, 25072), (5224, 15670), (6268, 13060), (6530, 12536), (7835, 10448)]