131238320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{86341}}^1$

素因数の和:86373

約数の個数: 40

約数和(自身を含む): 321192240

約数和(自身を除く): 189953920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 86341, 172682, 345364, 431705, 690728, 863410, 1381456, 1640479, 1726820, 3280958, 3453640, 6561916, 6907280, 8202395, 13123832, 16404790, 26247664, 32809580, 65619160, 131238320]

約数ペア:

[(1, 131238320), (2, 65619160), (4, 32809580), (5, 26247664), (8, 16404790), (10, 13123832), (16, 8202395), (19, 6907280), (20, 6561916), (38, 3453640), (40, 3280958), (76, 1726820), (80, 1640479), (95, 1381456), (152, 863410), (190, 690728), (304, 431705), (380, 345364), (760, 172682), (1520, 86341)]