645880

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 1481040

約数和(自身を除く): 835160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 241, 268, 335, 482, 536, 670, 964, 1205, 1340, 1928, 2410, 2680, 4820, 9640, 16147, 32294, 64588, 80735, 129176, 161470, 322940, 645880]

約数ペア:

[(1, 645880), (2, 322940), (4, 161470), (5, 129176), (8, 80735), (10, 64588), (20, 32294), (40, 16147), (67, 9640), (134, 4820), (241, 2680), (268, 2410), (335, 1928), (482, 1340), (536, 1205), (670, 964)]