19765480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{967}}^1$

素因数の和:1058

約数の個数: 64

約数和(自身を含む): 51575040

約数和(自身を除く): 31809560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 140, 146, 280, 292, 365, 511, 584, 730, 967, 1022, 1460, 1934, 2044, 2555, 2920, 3868, 4088, 4835, 5110, 6769, 7736, 9670, 10220, 13538, 19340, 20440, 27076, 33845, 38680, 54152, 67690, 70591, 135380, 141182, 270760, 282364, 352955, 494137, 564728, 705910, 988274, 1411820, 1976548, 2470685, 2823640, 3953096, 4941370, 9882740, 19765480]

約数ペア:

[(1, 19765480), (2, 9882740), (4, 4941370), (5, 3953096), (7, 2823640), (8, 2470685), (10, 1976548), (14, 1411820), (20, 988274), (28, 705910), (35, 564728), (40, 494137), (56, 352955), (70, 282364), (73, 270760), (140, 141182), (146, 135380), (280, 70591), (292, 67690), (365, 54152), (511, 38680), (584, 33845), (730, 27076), (967, 20440), (1022, 19340), (1460, 13538), (1934, 10220), (2044, 9670), (2555, 7736), (2920, 6769), (3868, 5110), (4088, 4835)]