19835728

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2621}}^1$

素因数の和:2683

約数の個数: 40

約数和(自身を含む): 42916896

約数和(自身を除く): 23081168

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2621, 3784, 5242, 7568, 10484, 20968, 28831, 41936, 57662, 112703, 115324, 225406, 230648, 450812, 461296, 901624, 1239733, 1803248, 2479466, 4958932, 9917864, 19835728]

約数ペア:

[(1, 19835728), (2, 9917864), (4, 4958932), (8, 2479466), (11, 1803248), (16, 1239733), (22, 901624), (43, 461296), (44, 450812), (86, 230648), (88, 225406), (172, 115324), (176, 112703), (344, 57662), (473, 41936), (688, 28831), (946, 20968), (1892, 10484), (2621, 7568), (3784, 5242)]