20806561680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86694007}}^1$

素因数の和:86694023

約数の個数: 40

約数和(自身を含む): 64500341952

約数和(自身を除く): 43693780272

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86694007, 173388014, 260082021, 346776028, 433470035, 520164042, 693552056, 866940070, 1040328084, 1300410105, 1387104112, 1733880140, 2080656168, 2600820210, 3467760280, 4161312336, 5201640420, 6935520560, 10403280840, 20806561680]

約数ペア:

[(1, 20806561680), (2, 10403280840), (3, 6935520560), (4, 5201640420), (5, 4161312336), (6, 3467760280), (8, 2600820210), (10, 2080656168), (12, 1733880140), (15, 1387104112), (16, 1300410105), (20, 1040328084), (24, 866940070), (30, 693552056), (40, 520164042), (48, 433470035), (60, 346776028), (80, 260082021), (120, 173388014), (240, 86694007)]