16666540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 39414816

約数和(自身を除く): 22748276

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 97, 110, 121, 142, 194, 220, 242, 284, 355, 388, 484, 485, 605, 710, 781, 970, 1067, 1210, 1420, 1562, 1940, 2134, 2420, 3124, 3905, 4268, 5335, 6887, 7810, 8591, 10670, 11737, 13774, 15620, 17182, 21340, 23474, 27548, 34364, 34435, 42955, 46948, 58685, 68870, 75757, 85910, 117370, 137740, 151514, 171820, 234740, 303028, 378785, 757570, 833327, 1515140, 1666654, 3333308, 4166635, 8333270, 16666540]

約数ペア:

[(1, 16666540), (2, 8333270), (4, 4166635), (5, 3333308), (10, 1666654), (11, 1515140), (20, 833327), (22, 757570), (44, 378785), (55, 303028), (71, 234740), (97, 171820), (110, 151514), (121, 137740), (142, 117370), (194, 85910), (220, 75757), (242, 68870), (284, 58685), (355, 46948), (388, 42955), (484, 34435), (485, 34364), (605, 27548), (710, 23474), (781, 21340), (970, 17182), (1067, 15620), (1210, 13774), (1420, 11737), (1562, 10670), (1940, 8591), (2134, 7810), (2420, 6887), (3124, 5335), (3905, 4268)]