309927940

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{45179}}^1$

素因数の和:45209

約数の個数: 48

約数和(自身を含む): 759024000

約数和(自身を除く): 449096060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 45179, 90358, 180716, 225895, 316253, 451790, 632506, 903580, 1265012, 1581265, 2213771, 3162530, 4427542, 6325060, 8855084, 11068855, 15496397, 22137710, 30992794, 44275420, 61985588, 77481985, 154963970, 309927940]

約数ペア:

[(1, 309927940), (2, 154963970), (4, 77481985), (5, 61985588), (7, 44275420), (10, 30992794), (14, 22137710), (20, 15496397), (28, 11068855), (35, 8855084), (49, 6325060), (70, 4427542), (98, 3162530), (140, 2213771), (196, 1581265), (245, 1265012), (343, 903580), (490, 632506), (686, 451790), (980, 316253), (1372, 225895), (1715, 180716), (3430, 90358), (6860, 45179)]