16781520

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1427}}^1$

素因数の和:1457

約数の個数: 120

約数和(自身を含む): 60558624

約数和(自身を除く): 43777104

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1427, 1470, 1680, 1960, 2352, 2854, 2940, 3920, 4281, 5708, 5880, 7135, 8562, 9989, 11416, 11760, 14270, 17124, 19978, 21405, 22832, 28540, 29967, 34248, 39956, 42810, 49945, 57080, 59934, 68496, 69923, 79912, 85620, 99890, 114160, 119868, 139846, 149835, 159824, 171240, 199780, 209769, 239736, 279692, 299670, 342480, 349615, 399560, 419538, 479472, 559384, 599340, 699230, 799120, 839076, 1048845, 1118768, 1198680, 1398460, 1678152, 2097690, 2397360, 2796920, 3356304, 4195380, 5593840, 8390760, 16781520]

約数ペア:

[(1, 16781520), (2, 8390760), (3, 5593840), (4, 4195380), (5, 3356304), (6, 2796920), (7, 2397360), (8, 2097690), (10, 1678152), (12, 1398460), (14, 1198680), (15, 1118768), (16, 1048845), (20, 839076), (21, 799120), (24, 699230), (28, 599340), (30, 559384), (35, 479472), (40, 419538), (42, 399560), (48, 349615), (49, 342480), (56, 299670), (60, 279692), (70, 239736), (80, 209769), (84, 199780), (98, 171240), (105, 159824), (112, 149835), (120, 139846), (140, 119868), (147, 114160), (168, 99890), (196, 85620), (210, 79912), (240, 69923), (245, 68496), (280, 59934), (294, 57080), (336, 49945), (392, 42810), (420, 39956), (490, 34248), (560, 29967), (588, 28540), (735, 22832), (784, 21405), (840, 19978), (980, 17124), (1176, 14270), (1427, 11760), (1470, 11416), (1680, 9989), (1960, 8562), (2352, 7135), (2854, 5880), (2940, 5708), (3920, 4281)]