81368490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:508

約数の個数: 128

約数和(自身を含む): 238878720

約数和(自身を除く): 157510230

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 31, 35, 42, 58, 62, 70, 87, 93, 105, 145, 155, 174, 186, 203, 210, 217, 290, 310, 406, 431, 434, 435, 465, 609, 651, 862, 870, 899, 930, 1015, 1085, 1218, 1293, 1302, 1798, 2030, 2155, 2170, 2586, 2697, 3017, 3045, 3255, 4310, 4495, 5394, 6034, 6090, 6293, 6465, 6510, 8990, 9051, 12499, 12586, 12930, 13361, 13485, 15085, 18102, 18879, 24998, 26722, 26970, 30170, 31465, 37497, 37758, 40083, 45255, 62495, 62930, 66805, 74994, 80166, 87493, 90510, 93527, 94395, 124990, 133610, 174986, 187054, 187485, 188790, 200415, 262479, 280581, 374970, 387469, 400830, 437465, 467635, 524958, 561162, 774938, 874930, 935270, 1162407, 1312395, 1402905, 1937345, 2324814, 2624790, 2712283, 2805810, 3874690, 5424566, 5812035, 8136849, 11624070, 13561415, 16273698, 27122830, 40684245, 81368490]

約数ペア:

[(1, 81368490), (2, 40684245), (3, 27122830), (5, 16273698), (6, 13561415), (7, 11624070), (10, 8136849), (14, 5812035), (15, 5424566), (21, 3874690), (29, 2805810), (30, 2712283), (31, 2624790), (35, 2324814), (42, 1937345), (58, 1402905), (62, 1312395), (70, 1162407), (87, 935270), (93, 874930), (105, 774938), (145, 561162), (155, 524958), (174, 467635), (186, 437465), (203, 400830), (210, 387469), (217, 374970), (290, 280581), (310, 262479), (406, 200415), (431, 188790), (434, 187485), (435, 187054), (465, 174986), (609, 133610), (651, 124990), (862, 94395), (870, 93527), (899, 90510), (930, 87493), (1015, 80166), (1085, 74994), (1218, 66805), (1293, 62930), (1302, 62495), (1798, 45255), (2030, 40083), (2155, 37758), (2170, 37497), (2586, 31465), (2697, 30170), (3017, 26970), (3045, 26722), (3255, 24998), (4310, 18879), (4495, 18102), (5394, 15085), (6034, 13485), (6090, 13361), (6293, 12930), (6465, 12586), (6510, 12499), (8990, 9051)]