1957780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{809}}^1$

素因数の和:840

約数の個数: 36

約数和(自身を含む): 4524660

約数和(自身を除く): 2566880

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 809, 1210, 1618, 2420, 3236, 4045, 8090, 8899, 16180, 17798, 35596, 44495, 88990, 97889, 177980, 195778, 391556, 489445, 978890, 1957780]

約数ペア:

[(1, 1957780), (2, 978890), (4, 489445), (5, 391556), (10, 195778), (11, 177980), (20, 97889), (22, 88990), (44, 44495), (55, 35596), (110, 17798), (121, 16180), (220, 8899), (242, 8090), (484, 4045), (605, 3236), (809, 2420), (1210, 1618)]