28013643

素因数分解:

$3^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:616

約数の個数: 36

約数和(自身を含む): 47512920

約数和(自身を除く): 19499277

約数列:

[1, 3, 7, 9, 21, 49, 63, 139, 147, 417, 441, 457, 973, 1251, 1371, 2919, 3199, 4113, 6811, 8757, 9597, 20433, 22393, 28791, 61299, 63523, 67179, 190569, 201537, 444661, 571707, 1333983, 3112627, 4001949, 9337881, 28013643]

約数ペア:

[(1, 28013643), (3, 9337881), (7, 4001949), (9, 3112627), (21, 1333983), (49, 571707), (63, 444661), (139, 201537), (147, 190569), (417, 67179), (441, 63523), (457, 61299), (973, 28791), (1251, 22393), (1371, 20433), (2919, 9597), (3199, 8757), (4113, 6811)]