21998440

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1877}}^1$

素因数の和:2181

約数の個数: 32

約数和(自身を含む): 49691880

約数和(自身を除く): 27693440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1877, 2344, 2930, 3754, 5860, 7508, 9385, 11720, 15016, 18770, 37540, 75080, 549961, 1099922, 2199844, 2749805, 4399688, 5499610, 10999220, 21998440]

約数ペア:

[(1, 21998440), (2, 10999220), (4, 5499610), (5, 4399688), (8, 2749805), (10, 2199844), (20, 1099922), (40, 549961), (293, 75080), (586, 37540), (1172, 18770), (1465, 15016), (1877, 11720), (2344, 9385), (2930, 7508), (3754, 5860)]