20807880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{547}}^1$

素因数の和:878

約数の個数: 64

約数和(自身を含む): 62735040

約数和(自身を除く): 41927160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 317, 547, 634, 951, 1094, 1268, 1585, 1641, 1902, 2188, 2536, 2735, 3170, 3282, 3804, 4376, 4755, 5470, 6340, 6564, 7608, 8205, 9510, 10940, 12680, 13128, 16410, 19020, 21880, 32820, 38040, 65640, 173399, 346798, 520197, 693596, 866995, 1040394, 1387192, 1733990, 2080788, 2600985, 3467980, 4161576, 5201970, 6935960, 10403940, 20807880]

約数ペア:

[(1, 20807880), (2, 10403940), (3, 6935960), (4, 5201970), (5, 4161576), (6, 3467980), (8, 2600985), (10, 2080788), (12, 1733990), (15, 1387192), (20, 1040394), (24, 866995), (30, 693596), (40, 520197), (60, 346798), (120, 173399), (317, 65640), (547, 38040), (634, 32820), (951, 21880), (1094, 19020), (1268, 16410), (1585, 13128), (1641, 12680), (1902, 10940), (2188, 9510), (2536, 8205), (2735, 7608), (3170, 6564), (3282, 6340), (3804, 5470), (4376, 4755)]