19805840

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8537}}^1$

素因数の和:8579

約数の個数: 40

約数和(自身を含む): 47642040

約数和(自身を除く): 27836200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 8537, 17074, 34148, 42685, 68296, 85370, 136592, 170740, 247573, 341480, 495146, 682960, 990292, 1237865, 1980584, 2475730, 3961168, 4951460, 9902920, 19805840]

約数ペア:

[(1, 19805840), (2, 9902920), (4, 4951460), (5, 3961168), (8, 2475730), (10, 1980584), (16, 1237865), (20, 990292), (29, 682960), (40, 495146), (58, 341480), (80, 247573), (116, 170740), (145, 136592), (232, 85370), (290, 68296), (464, 42685), (580, 34148), (1160, 17074), (2320, 8537)]