21548890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{1619}}^1$

素因数の和:1659

約数の個数: 32

約数和(自身を含む): 42690240

約数和(自身を除く): 21141350

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 1331, 1619, 2662, 3238, 6655, 8095, 13310, 16190, 17809, 35618, 89045, 178090, 195899, 391798, 979495, 1958990, 2154889, 4309778, 10774445, 21548890]

約数ペア:

[(1, 21548890), (2, 10774445), (5, 4309778), (10, 2154889), (11, 1958990), (22, 979495), (55, 391798), (110, 195899), (121, 178090), (242, 89045), (605, 35618), (1210, 17809), (1331, 16190), (1619, 13310), (2662, 8095), (3238, 6655)]