20402668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{673}}^1$

素因数の和:754

約数の個数: 48

約数和(自身を含む): 42801696

約数和(自身を除く): 22399028

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 53, 106, 143, 212, 286, 572, 583, 673, 689, 1166, 1346, 1378, 2332, 2692, 2756, 7403, 7579, 8749, 14806, 15158, 17498, 29612, 30316, 34996, 35669, 71338, 96239, 142676, 192478, 384956, 392359, 463697, 784718, 927394, 1569436, 1854788, 5100667, 10201334, 20402668]

約数ペア:

[(1, 20402668), (2, 10201334), (4, 5100667), (11, 1854788), (13, 1569436), (22, 927394), (26, 784718), (44, 463697), (52, 392359), (53, 384956), (106, 192478), (143, 142676), (212, 96239), (286, 71338), (572, 35669), (583, 34996), (673, 30316), (689, 29612), (1166, 17498), (1346, 15158), (1378, 14806), (2332, 8749), (2692, 7579), (2756, 7403)]