280180340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{115777}}^1$

素因数の和:115808

約数の個数: 36

約数和(自身を含む): 646735908

約数和(自身を除く): 366555568

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 115777, 231554, 463108, 578885, 1157770, 1273547, 2315540, 2547094, 5094188, 6367735, 12735470, 14009017, 25470940, 28018034, 56036068, 70045085, 140090170, 280180340]

約数ペア:

[(1, 280180340), (2, 140090170), (4, 70045085), (5, 56036068), (10, 28018034), (11, 25470940), (20, 14009017), (22, 12735470), (44, 6367735), (55, 5094188), (110, 2547094), (121, 2315540), (220, 1273547), (242, 1157770), (484, 578885), (605, 463108), (1210, 231554), (2420, 115777)]