28578627

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 54442752

約数和(自身を除く): 25864125

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 121, 161, 163, 207, 231, 253, 363, 483, 489, 693, 759, 847, 1089, 1141, 1449, 1467, 1771, 1793, 2277, 2541, 2783, 3423, 3749, 5313, 5379, 7623, 8349, 10269, 11247, 12551, 15939, 16137, 19481, 19723, 25047, 26243, 33741, 37653, 41239, 58443, 59169, 78729, 112959, 123717, 138061, 175329, 177507, 236187, 288673, 371151, 414183, 453629, 866019, 1242549, 1360887, 2598057, 3175403, 4082661, 9526209, 28578627]

約数ペア:

[(1, 28578627), (3, 9526209), (7, 4082661), (9, 3175403), (11, 2598057), (21, 1360887), (23, 1242549), (33, 866019), (63, 453629), (69, 414183), (77, 371151), (99, 288673), (121, 236187), (161, 177507), (163, 175329), (207, 138061), (231, 123717), (253, 112959), (363, 78729), (483, 59169), (489, 58443), (693, 41239), (759, 37653), (847, 33741), (1089, 26243), (1141, 25047), (1449, 19723), (1467, 19481), (1771, 16137), (1793, 15939), (2277, 12551), (2541, 11247), (2783, 10269), (3423, 8349), (3749, 7623), (5313, 5379)]