21387780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{39607}}^1$

素因数の和:39625

約数の個数: 48

約数和(自身を含む): 66541440

約数和(自身を除く): 45153660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 39607, 79214, 118821, 158428, 198035, 237642, 356463, 396070, 475284, 594105, 712926, 792140, 1069389, 1188210, 1425852, 1782315, 2138778, 2376420, 3564630, 4277556, 5346945, 7129260, 10693890, 21387780]

約数ペア:

[(1, 21387780), (2, 10693890), (3, 7129260), (4, 5346945), (5, 4277556), (6, 3564630), (9, 2376420), (10, 2138778), (12, 1782315), (15, 1425852), (18, 1188210), (20, 1069389), (27, 792140), (30, 712926), (36, 594105), (45, 475284), (54, 396070), (60, 356463), (90, 237642), (108, 198035), (135, 158428), (180, 118821), (270, 79214), (540, 39607)]