28109529

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:470

約数の個数: 48

約数和(自身を含む): 49320960

約数和(自身を除く): 21211431

約数列:

[1, 3, 7, 9, 21, 31, 37, 63, 93, 111, 217, 259, 279, 333, 389, 651, 777, 1147, 1167, 1953, 2331, 2723, 3441, 3501, 8029, 8169, 10323, 12059, 14393, 24087, 24507, 36177, 43179, 72261, 84413, 100751, 108531, 129537, 253239, 302253, 446183, 759717, 906759, 1338549, 3123281, 4015647, 9369843, 28109529]

約数ペア:

[(1, 28109529), (3, 9369843), (7, 4015647), (9, 3123281), (21, 1338549), (31, 906759), (37, 759717), (63, 446183), (93, 302253), (111, 253239), (217, 129537), (259, 108531), (279, 100751), (333, 84413), (389, 72261), (651, 43179), (777, 36177), (1147, 24507), (1167, 24087), (1953, 14393), (2331, 12059), (2723, 10323), (3441, 8169), (3501, 8029)]