278208020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{367}}^1\times {\mathrm{1307}}^1$

素因数の和:1712

約数の個数: 48

約数和(自身を含む): 606493440

約数和(自身を除く): 328285420

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 367, 580, 734, 1307, 1468, 1835, 2614, 3670, 5228, 6535, 7340, 10643, 13070, 21286, 26140, 37903, 42572, 53215, 75806, 106430, 151612, 189515, 212860, 379030, 479669, 758060, 959338, 1918676, 2398345, 4796690, 9593380, 13910401, 27820802, 55641604, 69552005, 139104010, 278208020]

約数ペア:

[(1, 278208020), (2, 139104010), (4, 69552005), (5, 55641604), (10, 27820802), (20, 13910401), (29, 9593380), (58, 4796690), (116, 2398345), (145, 1918676), (290, 959338), (367, 758060), (580, 479669), (734, 379030), (1307, 212860), (1468, 189515), (1835, 151612), (2614, 106430), (3670, 75806), (5228, 53215), (6535, 42572), (7340, 37903), (10643, 26140), (13070, 21286)]