28239540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{947}}^1$

素因数の和:1037

約数の個数: 96

約数和(自身を含む): 91736064

約数和(自身を除く): 63496524

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 71, 84, 105, 140, 142, 210, 213, 284, 355, 420, 426, 497, 710, 852, 947, 994, 1065, 1420, 1491, 1894, 1988, 2130, 2485, 2841, 2982, 3788, 4260, 4735, 4970, 5682, 5964, 6629, 7455, 9470, 9940, 11364, 13258, 14205, 14910, 18940, 19887, 26516, 28410, 29820, 33145, 39774, 56820, 66290, 67237, 79548, 99435, 132580, 134474, 198870, 201711, 268948, 336185, 397740, 403422, 470659, 672370, 806844, 941318, 1008555, 1344740, 1411977, 1882636, 2017110, 2353295, 2823954, 4034220, 4706590, 5647908, 7059885, 9413180, 14119770, 28239540]

約数ペア:

[(1, 28239540), (2, 14119770), (3, 9413180), (4, 7059885), (5, 5647908), (6, 4706590), (7, 4034220), (10, 2823954), (12, 2353295), (14, 2017110), (15, 1882636), (20, 1411977), (21, 1344740), (28, 1008555), (30, 941318), (35, 806844), (42, 672370), (60, 470659), (70, 403422), (71, 397740), (84, 336185), (105, 268948), (140, 201711), (142, 198870), (210, 134474), (213, 132580), (284, 99435), (355, 79548), (420, 67237), (426, 66290), (497, 56820), (710, 39774), (852, 33145), (947, 29820), (994, 28410), (1065, 26516), (1420, 19887), (1491, 18940), (1894, 14910), (1988, 14205), (2130, 13258), (2485, 11364), (2841, 9940), (2982, 9470), (3788, 7455), (4260, 6629), (4735, 5964), (4970, 5682)]