19972744

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 22161656

約数列:

[1, 2, 4, 8, 11, 22, 44, 47, 88, 94, 121, 188, 242, 376, 439, 484, 517, 878, 968, 1034, 1756, 2068, 3512, 4136, 4829, 5687, 9658, 11374, 19316, 20633, 22748, 38632, 41266, 45496, 53119, 82532, 106238, 165064, 212476, 226963, 424952, 453926, 907852, 1815704, 2496593, 4993186, 9986372, 19972744]

約数ペア:

[(1, 19972744), (2, 9986372), (4, 4993186), (8, 2496593), (11, 1815704), (22, 907852), (44, 453926), (47, 424952), (88, 226963), (94, 212476), (121, 165064), (188, 106238), (242, 82532), (376, 53119), (439, 45496), (484, 41266), (517, 38632), (878, 22748), (968, 20633), (1034, 19316), (1756, 11374), (2068, 9658), (3512, 5687), (4136, 4829)]