18927440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{463}}^1$

素因数の和:556

約数の個数: 80

約数和(自身を含む): 51091968

約数和(自身を除く): 32164528

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 73, 80, 112, 140, 146, 280, 292, 365, 463, 511, 560, 584, 730, 926, 1022, 1168, 1460, 1852, 2044, 2315, 2555, 2920, 3241, 3704, 4088, 4630, 5110, 5840, 6482, 7408, 8176, 9260, 10220, 12964, 16205, 18520, 20440, 25928, 32410, 33799, 37040, 40880, 51856, 64820, 67598, 129640, 135196, 168995, 236593, 259280, 270392, 337990, 473186, 540784, 675980, 946372, 1182965, 1351960, 1892744, 2365930, 2703920, 3785488, 4731860, 9463720, 18927440]

約数ペア:

[(1, 18927440), (2, 9463720), (4, 4731860), (5, 3785488), (7, 2703920), (8, 2365930), (10, 1892744), (14, 1351960), (16, 1182965), (20, 946372), (28, 675980), (35, 540784), (40, 473186), (56, 337990), (70, 270392), (73, 259280), (80, 236593), (112, 168995), (140, 135196), (146, 129640), (280, 67598), (292, 64820), (365, 51856), (463, 40880), (511, 37040), (560, 33799), (584, 32410), (730, 25928), (926, 20440), (1022, 18520), (1168, 16205), (1460, 12964), (1852, 10220), (2044, 9260), (2315, 8176), (2555, 7408), (2920, 6482), (3241, 5840), (3704, 5110), (4088, 4630)]