28678815

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 57264480

約数和(自身を除く): 28585665

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 121, 165, 207, 229, 253, 345, 363, 495, 605, 687, 759, 1035, 1089, 1145, 1265, 1815, 2061, 2277, 2519, 2783, 3435, 3795, 5267, 5445, 7557, 8349, 10305, 11385, 12595, 13915, 15801, 22671, 25047, 26335, 27709, 37785, 41745, 47403, 57937, 79005, 83127, 113355, 125235, 138545, 173811, 237015, 249381, 289685, 415635, 521433, 637307, 869055, 1246905, 1911921, 2607165, 3186535, 5735763, 9559605, 28678815]

約数ペア:

[(1, 28678815), (3, 9559605), (5, 5735763), (9, 3186535), (11, 2607165), (15, 1911921), (23, 1246905), (33, 869055), (45, 637307), (55, 521433), (69, 415635), (99, 289685), (115, 249381), (121, 237015), (165, 173811), (207, 138545), (229, 125235), (253, 113355), (345, 83127), (363, 79005), (495, 57937), (605, 47403), (687, 41745), (759, 37785), (1035, 27709), (1089, 26335), (1145, 25047), (1265, 22671), (1815, 15801), (2061, 13915), (2277, 12595), (2519, 11385), (2783, 10305), (3435, 8349), (3795, 7557), (5267, 5445)]