21180144

素因数分解:

$2^4\times 3^1\times {\mathrm{97}}^1\times {\mathrm{4549}}^1$

素因数の和:4657

約数の個数: 40

約数和(自身を含む): 55291600

約数和(自身を除く): 34111456

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 97, 194, 291, 388, 582, 776, 1164, 1552, 2328, 4549, 4656, 9098, 13647, 18196, 27294, 36392, 54588, 72784, 109176, 218352, 441253, 882506, 1323759, 1765012, 2647518, 3530024, 5295036, 7060048, 10590072, 21180144]

約数ペア:

[(1, 21180144), (2, 10590072), (3, 7060048), (4, 5295036), (6, 3530024), (8, 2647518), (12, 1765012), (16, 1323759), (24, 882506), (48, 441253), (97, 218352), (194, 109176), (291, 72784), (388, 54588), (582, 36392), (776, 27294), (1164, 18196), (1552, 13647), (2328, 9098), (4549, 4656)]