21847120

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{787}}^1$

素因数の和:1147

約数の個数: 40

約数和(自身を含む): 51005664

約数和(自身を除く): 29158544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 694, 787, 1388, 1574, 1735, 2776, 3148, 3470, 3935, 5552, 6296, 6940, 7870, 12592, 13880, 15740, 27760, 31480, 62960, 273089, 546178, 1092356, 1365445, 2184712, 2730890, 4369424, 5461780, 10923560, 21847120]

約数ペア:

[(1, 21847120), (2, 10923560), (4, 5461780), (5, 4369424), (8, 2730890), (10, 2184712), (16, 1365445), (20, 1092356), (40, 546178), (80, 273089), (347, 62960), (694, 31480), (787, 27760), (1388, 15740), (1574, 13880), (1735, 12592), (2776, 7870), (3148, 6940), (3470, 6296), (3935, 5552)]