128534840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{65579}}^1$

素因数の和:65604

約数の個数: 48

約数和(自身を含む): 336425400

約数和(自身を除く): 207890560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 65579, 131158, 262316, 327895, 459053, 524632, 655790, 918106, 1311580, 1836212, 2295265, 2623160, 3213371, 3672424, 4590530, 6426742, 9181060, 12853484, 16066855, 18362120, 25706968, 32133710, 64267420, 128534840]

約数ペア:

[(1, 128534840), (2, 64267420), (4, 32133710), (5, 25706968), (7, 18362120), (8, 16066855), (10, 12853484), (14, 9181060), (20, 6426742), (28, 4590530), (35, 3672424), (40, 3213371), (49, 2623160), (56, 2295265), (70, 1836212), (98, 1311580), (140, 918106), (196, 655790), (245, 524632), (280, 459053), (392, 327895), (490, 262316), (980, 131158), (1960, 65579)]