19606840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4051}}^1$

素因数の和:4084

約数の個数: 48

約数和(自身を含む): 48502440

約数和(自身を除く): 28895600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4051, 4840, 8102, 16204, 20255, 32408, 40510, 44561, 81020, 89122, 162040, 178244, 222805, 356488, 445610, 490171, 891220, 980342, 1782440, 1960684, 2450855, 3921368, 4901710, 9803420, 19606840]

約数ペア:

[(1, 19606840), (2, 9803420), (4, 4901710), (5, 3921368), (8, 2450855), (10, 1960684), (11, 1782440), (20, 980342), (22, 891220), (40, 490171), (44, 445610), (55, 356488), (88, 222805), (110, 178244), (121, 162040), (220, 89122), (242, 81020), (440, 44561), (484, 40510), (605, 32408), (968, 20255), (1210, 16204), (2420, 8102), (4051, 4840)]