28587780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:690

約数の個数: 144

約数和(自身を含む): 98454720

約数和(自身を除く): 69866940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 494, 570, 585, 643, 684, 741, 780, 855, 988, 1140, 1170, 1235, 1286, 1482, 1710, 1929, 2223, 2340, 2470, 2572, 2964, 3215, 3420, 3705, 3858, 4446, 4940, 5787, 6430, 7410, 7716, 8359, 8892, 9645, 11115, 11574, 12217, 12860, 14820, 16718, 19290, 22230, 23148, 24434, 25077, 28935, 33436, 36651, 38580, 41795, 44460, 48868, 50154, 57870, 61085, 73302, 75231, 83590, 100308, 109953, 115740, 122170, 125385, 146604, 150462, 158821, 167180, 183255, 219906, 244340, 250770, 300924, 317642, 366510, 376155, 439812, 476463, 501540, 549765, 635284, 733020, 752310, 794105, 952926, 1099530, 1429389, 1504620, 1588210, 1905852, 2199060, 2382315, 2858778, 3176420, 4764630, 5717556, 7146945, 9529260, 14293890, 28587780]

約数ペア:

[(1, 28587780), (2, 14293890), (3, 9529260), (4, 7146945), (5, 5717556), (6, 4764630), (9, 3176420), (10, 2858778), (12, 2382315), (13, 2199060), (15, 1905852), (18, 1588210), (19, 1504620), (20, 1429389), (26, 1099530), (30, 952926), (36, 794105), (38, 752310), (39, 733020), (45, 635284), (52, 549765), (57, 501540), (60, 476463), (65, 439812), (76, 376155), (78, 366510), (90, 317642), (95, 300924), (114, 250770), (117, 244340), (130, 219906), (156, 183255), (171, 167180), (180, 158821), (190, 150462), (195, 146604), (228, 125385), (234, 122170), (247, 115740), (260, 109953), (285, 100308), (342, 83590), (380, 75231), (390, 73302), (468, 61085), (494, 57870), (570, 50154), (585, 48868), (643, 44460), (684, 41795), (741, 38580), (780, 36651), (855, 33436), (988, 28935), (1140, 25077), (1170, 24434), (1235, 23148), (1286, 22230), (1482, 19290), (1710, 16718), (1929, 14820), (2223, 12860), (2340, 12217), (2470, 11574), (2572, 11115), (2964, 9645), (3215, 8892), (3420, 8359), (3705, 7716), (3858, 7410), (4446, 6430), (4940, 5787)]