13780640

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2003}}^1$

素因数の和:2061

約数の個数: 48

約数和(自身を含む): 33330528

約数和(自身を除く): 19549888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2003, 3440, 4006, 6880, 8012, 10015, 16024, 20030, 32048, 40060, 64096, 80120, 86129, 160240, 172258, 320480, 344516, 430645, 689032, 861290, 1378064, 1722580, 2756128, 3445160, 6890320, 13780640]

約数ペア:

[(1, 13780640), (2, 6890320), (4, 3445160), (5, 2756128), (8, 1722580), (10, 1378064), (16, 861290), (20, 689032), (32, 430645), (40, 344516), (43, 320480), (80, 172258), (86, 160240), (160, 86129), (172, 80120), (215, 64096), (344, 40060), (430, 32048), (688, 20030), (860, 16024), (1376, 10015), (1720, 8012), (2003, 6880), (3440, 4006)]