20764560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{359}}^1$

素因数の和:616

約数の個数: 80

約数和(自身を含む): 64817280

約数和(自身を除く): 44052720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 241, 359, 482, 718, 723, 964, 1077, 1205, 1436, 1446, 1795, 1928, 2154, 2410, 2872, 2892, 3590, 3615, 3856, 4308, 4820, 5385, 5744, 5784, 7180, 7230, 8616, 9640, 10770, 11568, 14360, 14460, 17232, 19280, 21540, 28720, 28920, 43080, 57840, 86160, 86519, 173038, 259557, 346076, 432595, 519114, 692152, 865190, 1038228, 1297785, 1384304, 1730380, 2076456, 2595570, 3460760, 4152912, 5191140, 6921520, 10382280, 20764560]

約数ペア:

[(1, 20764560), (2, 10382280), (3, 6921520), (4, 5191140), (5, 4152912), (6, 3460760), (8, 2595570), (10, 2076456), (12, 1730380), (15, 1384304), (16, 1297785), (20, 1038228), (24, 865190), (30, 692152), (40, 519114), (48, 432595), (60, 346076), (80, 259557), (120, 173038), (240, 86519), (241, 86160), (359, 57840), (482, 43080), (718, 28920), (723, 28720), (964, 21540), (1077, 19280), (1205, 17232), (1436, 14460), (1446, 14360), (1795, 11568), (1928, 10770), (2154, 9640), (2410, 8616), (2872, 7230), (2892, 7180), (3590, 5784), (3615, 5744), (3856, 5385), (4308, 4820)]