8340280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{373}}^1$

素因数の和:440

約数の個数: 64

約数和(自身を含む): 20734560

約数和(自身を除く): 12394280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 373, 430, 520, 559, 746, 860, 1118, 1492, 1720, 1865, 2236, 2795, 2984, 3730, 4472, 4849, 5590, 7460, 9698, 11180, 14920, 16039, 19396, 22360, 24245, 32078, 38792, 48490, 64156, 80195, 96980, 128312, 160390, 193960, 208507, 320780, 417014, 641560, 834028, 1042535, 1668056, 2085070, 4170140, 8340280]

約数ペア:

[(1, 8340280), (2, 4170140), (4, 2085070), (5, 1668056), (8, 1042535), (10, 834028), (13, 641560), (20, 417014), (26, 320780), (40, 208507), (43, 193960), (52, 160390), (65, 128312), (86, 96980), (104, 80195), (130, 64156), (172, 48490), (215, 38792), (260, 32078), (344, 24245), (373, 22360), (430, 19396), (520, 16039), (559, 14920), (746, 11180), (860, 9698), (1118, 7460), (1492, 5590), (1720, 4849), (1865, 4472), (2236, 3730), (2795, 2984)]