28642419

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 18531981

約数列:

[1, 3, 9, 13, 31, 39, 53, 93, 117, 149, 159, 279, 403, 447, 477, 689, 1209, 1341, 1643, 1937, 2067, 3627, 4619, 4929, 5811, 6201, 7897, 13857, 14787, 17433, 21359, 23691, 41571, 60047, 64077, 71073, 102661, 180141, 192231, 244807, 307983, 540423, 734421, 923949, 2203263, 3182491, 9547473, 28642419]

約数ペア:

[(1, 28642419), (3, 9547473), (9, 3182491), (13, 2203263), (31, 923949), (39, 734421), (53, 540423), (93, 307983), (117, 244807), (149, 192231), (159, 180141), (279, 102661), (403, 71073), (447, 64077), (477, 60047), (689, 41571), (1209, 23691), (1341, 21359), (1643, 17433), (1937, 14787), (2067, 13857), (3627, 7897), (4619, 6201), (4929, 5811)]