28306580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{457}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 63094080

約数和(自身を除く): 34787500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 163, 190, 326, 380, 457, 652, 815, 914, 1630, 1828, 2285, 3097, 3260, 4570, 6194, 8683, 9140, 12388, 15485, 17366, 30970, 34732, 43415, 61940, 74491, 86830, 148982, 173660, 297964, 372455, 744910, 1415329, 1489820, 2830658, 5661316, 7076645, 14153290, 28306580]

約数ペア:

[(1, 28306580), (2, 14153290), (4, 7076645), (5, 5661316), (10, 2830658), (19, 1489820), (20, 1415329), (38, 744910), (76, 372455), (95, 297964), (163, 173660), (190, 148982), (326, 86830), (380, 74491), (457, 61940), (652, 43415), (815, 34732), (914, 30970), (1630, 17366), (1828, 15485), (2285, 12388), (3097, 9140), (3260, 8683), (4570, 6194)]