28819780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{11909}}^1$

素因数の和:11940

約数の個数: 36

約数和(自身を含む): 66529260

約数和(自身を除く): 37709480

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 11909, 23818, 47636, 59545, 119090, 130999, 238180, 261998, 523996, 654995, 1309990, 1440989, 2619980, 2881978, 5763956, 7204945, 14409890, 28819780]

約数ペア:

[(1, 28819780), (2, 14409890), (4, 7204945), (5, 5763956), (10, 2881978), (11, 2619980), (20, 1440989), (22, 1309990), (44, 654995), (55, 523996), (110, 261998), (121, 238180), (220, 130999), (242, 119090), (484, 59545), (605, 47636), (1210, 23818), (2420, 11909)]