16991415

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 37739520

約数和(自身を除く): 20748105

約数列:

[1, 3, 5, 7, 9, 15, 17, 19, 21, 35, 45, 51, 57, 63, 85, 95, 105, 119, 133, 153, 167, 171, 255, 285, 315, 323, 357, 399, 501, 595, 665, 765, 835, 855, 969, 1071, 1169, 1197, 1503, 1615, 1785, 1995, 2261, 2505, 2839, 2907, 3173, 3507, 4845, 5355, 5845, 5985, 6783, 7515, 8517, 9519, 10521, 11305, 14195, 14535, 15865, 17535, 19873, 20349, 22211, 25551, 28557, 33915, 42585, 47595, 52605, 53941, 59619, 66633, 99365, 101745, 111055, 127755, 142785, 161823, 178857, 199899, 269705, 298095, 333165, 377587, 485469, 809115, 894285, 999495, 1132761, 1887935, 2427345, 3398283, 5663805, 16991415]

約数ペア:

[(1, 16991415), (3, 5663805), (5, 3398283), (7, 2427345), (9, 1887935), (15, 1132761), (17, 999495), (19, 894285), (21, 809115), (35, 485469), (45, 377587), (51, 333165), (57, 298095), (63, 269705), (85, 199899), (95, 178857), (105, 161823), (119, 142785), (133, 127755), (153, 111055), (167, 101745), (171, 99365), (255, 66633), (285, 59619), (315, 53941), (323, 52605), (357, 47595), (399, 42585), (501, 33915), (595, 28557), (665, 25551), (765, 22211), (835, 20349), (855, 19873), (969, 17535), (1071, 15865), (1169, 14535), (1197, 14195), (1503, 11305), (1615, 10521), (1785, 9519), (1995, 8517), (2261, 7515), (2505, 6783), (2839, 5985), (2907, 5845), (3173, 5355), (3507, 4845)]