20835040

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1217}}^1$

素因数の和:1339

約数の個数: 48

約数和(自身を含む): 49723632

約数和(自身を除く): 28888592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1217, 1712, 2140, 2434, 3424, 4280, 4868, 6085, 8560, 9736, 12170, 17120, 19472, 24340, 38944, 48680, 97360, 130219, 194720, 260438, 520876, 651095, 1041752, 1302190, 2083504, 2604380, 4167008, 5208760, 10417520, 20835040]

約数ペア:

[(1, 20835040), (2, 10417520), (4, 5208760), (5, 4167008), (8, 2604380), (10, 2083504), (16, 1302190), (20, 1041752), (32, 651095), (40, 520876), (80, 260438), (107, 194720), (160, 130219), (214, 97360), (428, 48680), (535, 38944), (856, 24340), (1070, 19472), (1217, 17120), (1712, 12170), (2140, 9736), (2434, 8560), (3424, 6085), (4280, 4868)]