16981965

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:84

約数の個数: 144

約数和(自身を含む): 41109120

約数和(自身を除く): 24127155

約数列:

[1, 3, 5, 7, 9, 11, 13, 15, 21, 29, 33, 35, 39, 45, 55, 63, 65, 77, 87, 91, 99, 105, 117, 143, 145, 165, 169, 195, 203, 231, 261, 273, 315, 319, 377, 385, 429, 435, 455, 495, 507, 585, 609, 693, 715, 819, 845, 957, 1001, 1015, 1131, 1155, 1183, 1287, 1305, 1365, 1521, 1595, 1827, 1859, 1885, 2145, 2233, 2535, 2639, 2871, 3003, 3045, 3393, 3465, 3549, 4095, 4147, 4785, 4901, 5005, 5577, 5655, 5915, 6435, 6699, 7605, 7917, 9009, 9135, 9295, 10647, 11165, 12441, 13013, 13195, 14355, 14703, 15015, 16731, 16965, 17745, 20097, 20735, 23751, 24505, 27885, 29029, 33495, 34307, 37323, 39039, 39585, 44109, 45045, 53235, 53911, 62205, 65065, 73515, 83655, 87087, 100485, 102921, 117117, 118755, 145145, 161733, 171535, 186615, 195195, 220545, 261261, 269555, 308763, 377377, 435435, 485199, 514605, 585585, 808665, 1132131, 1306305, 1543815, 1886885, 2425995, 3396393, 5660655, 16981965]

約数ペア:

[(1, 16981965), (3, 5660655), (5, 3396393), (7, 2425995), (9, 1886885), (11, 1543815), (13, 1306305), (15, 1132131), (21, 808665), (29, 585585), (33, 514605), (35, 485199), (39, 435435), (45, 377377), (55, 308763), (63, 269555), (65, 261261), (77, 220545), (87, 195195), (91, 186615), (99, 171535), (105, 161733), (117, 145145), (143, 118755), (145, 117117), (165, 102921), (169, 100485), (195, 87087), (203, 83655), (231, 73515), (261, 65065), (273, 62205), (315, 53911), (319, 53235), (377, 45045), (385, 44109), (429, 39585), (435, 39039), (455, 37323), (495, 34307), (507, 33495), (585, 29029), (609, 27885), (693, 24505), (715, 23751), (819, 20735), (845, 20097), (957, 17745), (1001, 16965), (1015, 16731), (1131, 15015), (1155, 14703), (1183, 14355), (1287, 13195), (1305, 13013), (1365, 12441), (1521, 11165), (1595, 10647), (1827, 9295), (1859, 9135), (1885, 9009), (2145, 7917), (2233, 7605), (2535, 6699), (2639, 6435), (2871, 5915), (3003, 5655), (3045, 5577), (3393, 5005), (3465, 4901), (3549, 4785), (4095, 4147)]