21201620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8761}}^1$

素因数の和:8792

約数の個数: 36

約数和(自身を含む): 48944532

約数和(自身を除く): 27742912

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8761, 17522, 35044, 43805, 87610, 96371, 175220, 192742, 385484, 481855, 963710, 1060081, 1927420, 2120162, 4240324, 5300405, 10600810, 21201620]

約数ペア:

[(1, 21201620), (2, 10600810), (4, 5300405), (5, 4240324), (10, 2120162), (11, 1927420), (20, 1060081), (22, 963710), (44, 481855), (55, 385484), (110, 192742), (121, 175220), (220, 96371), (242, 87610), (484, 43805), (605, 35044), (1210, 17522), (2420, 8761)]