77869820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{439}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 191711520

約数和(自身を除く): 113841700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 181, 196, 245, 362, 439, 490, 724, 878, 905, 980, 1267, 1756, 1810, 2195, 2534, 3073, 3620, 4390, 5068, 6146, 6335, 8780, 8869, 12292, 12670, 15365, 17738, 21511, 25340, 30730, 35476, 43022, 44345, 61460, 79459, 86044, 88690, 107555, 158918, 177380, 215110, 317836, 397295, 430220, 556213, 794590, 1112426, 1589180, 2224852, 2781065, 3893491, 5562130, 7786982, 11124260, 15573964, 19467455, 38934910, 77869820]

約数ペア:

[(1, 77869820), (2, 38934910), (4, 19467455), (5, 15573964), (7, 11124260), (10, 7786982), (14, 5562130), (20, 3893491), (28, 2781065), (35, 2224852), (49, 1589180), (70, 1112426), (98, 794590), (140, 556213), (181, 430220), (196, 397295), (245, 317836), (362, 215110), (439, 177380), (490, 158918), (724, 107555), (878, 88690), (905, 86044), (980, 79459), (1267, 61460), (1756, 44345), (1810, 43022), (2195, 35476), (2534, 30730), (3073, 25340), (3620, 21511), (4390, 17738), (5068, 15365), (6146, 12670), (6335, 12292), (8780, 8869)]