221420745

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:559

約数の個数: 96

約数和(自身を含む): 476985600

約数和(自身を除く): 255564855

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 139, 195, 273, 315, 389, 417, 455, 585, 695, 819, 973, 1167, 1251, 1365, 1807, 1945, 2085, 2723, 2919, 3501, 4095, 4865, 5057, 5421, 5835, 6255, 8169, 8757, 9035, 12649, 13615, 14595, 15171, 16263, 17505, 24507, 25285, 27105, 35399, 37947, 40845, 43785, 45513, 54071, 63245, 75855, 81315, 106197, 113841, 122535, 162213, 176995, 189735, 227565, 270355, 318591, 378497, 486639, 530985, 569205, 702923, 811065, 1135491, 1592955, 1892485, 2108769, 2433195, 3406473, 3514615, 4920461, 5677455, 6326307, 10543845, 14761383, 17032365, 24602305, 31631535, 44284149, 73806915, 221420745]

約数ペア:

[(1, 221420745), (3, 73806915), (5, 44284149), (7, 31631535), (9, 24602305), (13, 17032365), (15, 14761383), (21, 10543845), (35, 6326307), (39, 5677455), (45, 4920461), (63, 3514615), (65, 3406473), (91, 2433195), (105, 2108769), (117, 1892485), (139, 1592955), (195, 1135491), (273, 811065), (315, 702923), (389, 569205), (417, 530985), (455, 486639), (585, 378497), (695, 318591), (819, 270355), (973, 227565), (1167, 189735), (1251, 176995), (1365, 162213), (1807, 122535), (1945, 113841), (2085, 106197), (2723, 81315), (2919, 75855), (3501, 63245), (4095, 54071), (4865, 45513), (5057, 43785), (5421, 40845), (5835, 37947), (6255, 35399), (8169, 27105), (8757, 25285), (9035, 24507), (12649, 17505), (13615, 16263), (14595, 15171)]