30997780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{12809}}^1$

素因数の和:12840

約数の個数: 36

約数和(自身を含む): 71556660

約数和(自身を除く): 40558880

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 12809, 25618, 51236, 64045, 128090, 140899, 256180, 281798, 563596, 704495, 1408990, 1549889, 2817980, 3099778, 6199556, 7749445, 15498890, 30997780]

約数ペア:

[(1, 30997780), (2, 15498890), (4, 7749445), (5, 6199556), (10, 3099778), (11, 2817980), (20, 1549889), (22, 1408990), (44, 704495), (55, 563596), (110, 281798), (121, 256180), (220, 140899), (242, 128090), (484, 64045), (605, 51236), (1210, 25618), (2420, 12809)]