7881940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3257}}^1$

素因数の和:3288

約数の個数: 36

約数和(自身を含む): 18199188

約数和(自身を除く): 10317248

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 3257, 6514, 13028, 16285, 32570, 35827, 65140, 71654, 143308, 179135, 358270, 394097, 716540, 788194, 1576388, 1970485, 3940970, 7881940]

約数ペア:

[(1, 7881940), (2, 3940970), (4, 1970485), (5, 1576388), (10, 788194), (11, 716540), (20, 394097), (22, 358270), (44, 179135), (55, 143308), (110, 71654), (121, 65140), (220, 35827), (242, 32570), (484, 16285), (605, 13028), (1210, 6514), (2420, 3257)]