28201215

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 58014144

約数和(自身を除く): 29812929

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 37, 49, 51, 61, 85, 105, 111, 119, 147, 183, 185, 245, 255, 259, 305, 357, 427, 555, 595, 629, 735, 777, 833, 915, 1037, 1281, 1295, 1785, 1813, 1887, 2135, 2257, 2499, 2989, 3111, 3145, 3885, 4165, 4403, 5185, 5439, 6405, 6771, 7259, 8967, 9065, 9435, 11285, 12495, 13209, 14945, 15555, 15799, 21777, 22015, 27195, 30821, 33855, 36295, 38369, 44835, 47397, 50813, 66045, 78995, 92463, 108885, 110593, 115107, 152439, 154105, 191845, 236985, 254065, 268583, 331779, 462315, 552965, 575535, 762195, 805749, 1342915, 1658895, 1880081, 4028745, 5640243, 9400405, 28201215]

約数ペア:

[(1, 28201215), (3, 9400405), (5, 5640243), (7, 4028745), (15, 1880081), (17, 1658895), (21, 1342915), (35, 805749), (37, 762195), (49, 575535), (51, 552965), (61, 462315), (85, 331779), (105, 268583), (111, 254065), (119, 236985), (147, 191845), (183, 154105), (185, 152439), (245, 115107), (255, 110593), (259, 108885), (305, 92463), (357, 78995), (427, 66045), (555, 50813), (595, 47397), (629, 44835), (735, 38369), (777, 36295), (833, 33855), (915, 30821), (1037, 27195), (1281, 22015), (1295, 21777), (1785, 15799), (1813, 15555), (1887, 14945), (2135, 13209), (2257, 12495), (2499, 11285), (2989, 9435), (3111, 9065), (3145, 8967), (3885, 7259), (4165, 6771), (4403, 6405), (5185, 5439)]