81104540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19403}}^1$

素因数の和:19442

約数の個数: 48

約数和(自身を含む): 195592320

約数和(自身を除く): 114487780

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 19403, 38806, 77612, 97015, 194030, 213433, 368657, 388060, 426866, 737314, 853732, 1067165, 1474628, 1843285, 2134330, 3686570, 4055227, 4268660, 7373140, 8110454, 16220908, 20276135, 40552270, 81104540]

約数ペア:

[(1, 81104540), (2, 40552270), (4, 20276135), (5, 16220908), (10, 8110454), (11, 7373140), (19, 4268660), (20, 4055227), (22, 3686570), (38, 2134330), (44, 1843285), (55, 1474628), (76, 1067165), (95, 853732), (110, 737314), (190, 426866), (209, 388060), (220, 368657), (380, 213433), (418, 194030), (836, 97015), (1045, 77612), (2090, 38806), (4180, 19403)]