78875720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{25609}}^1$

素因数の和:25638

約数の個数: 64

約数和(自身を含む): 221270400

約数和(自身を除く): 142394680

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 25609, 51218, 102436, 128045, 179263, 204872, 256090, 281699, 358526, 512180, 563398, 717052, 896315, 1024360, 1126796, 1408495, 1434104, 1792630, 1971893, 2253592, 2816990, 3585260, 3943786, 5633980, 7170520, 7887572, 9859465, 11267960, 15775144, 19718930, 39437860, 78875720]

約数ペア:

[(1, 78875720), (2, 39437860), (4, 19718930), (5, 15775144), (7, 11267960), (8, 9859465), (10, 7887572), (11, 7170520), (14, 5633980), (20, 3943786), (22, 3585260), (28, 2816990), (35, 2253592), (40, 1971893), (44, 1792630), (55, 1434104), (56, 1408495), (70, 1126796), (77, 1024360), (88, 896315), (110, 717052), (140, 563398), (154, 512180), (220, 358526), (280, 281699), (308, 256090), (385, 204872), (440, 179263), (616, 128045), (770, 102436), (1540, 51218), (3080, 25609)]