78912680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{25621}}^1$

素因数の和:25650

約数の個数: 64

約数和(自身を含む): 221374080

約数和(自身を除く): 142461400

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, 25621, 51242, 102484, 128105, 179347, 204968, 256210, 281831, 358694, 512420, 563662, 717388, 896735, 1024840, 1127324, 1409155, 1434776, 1793470, 1972817, 2254648, 2818310, 3586940, 3945634, 5636620, 7173880, 7891268, 9864085, 11273240, 15782536, 19728170, 39456340, 78912680]

約数ペア:

[(1, 78912680), (2, 39456340), (4, 19728170), (5, 15782536), (7, 11273240), (8, 9864085), (10, 7891268), (11, 7173880), (14, 5636620), (20, 3945634), (22, 3586940), (28, 2818310), (35, 2254648), (40, 1972817), (44, 1793470), (55, 1434776), (56, 1409155), (70, 1127324), (77, 1024840), (88, 896735), (110, 717388), (140, 563662), (154, 512420), (220, 358694), (280, 281831), (308, 256210), (385, 204968), (440, 179347), (616, 128105), (770, 102484), (1540, 51242), (3080, 25621)]