217663028

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 439729920

約数和(自身を除く): 222066892

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 89, 121, 124, 163, 178, 242, 326, 341, 356, 484, 652, 682, 979, 1364, 1793, 1958, 2759, 3586, 3751, 3916, 5053, 5518, 7172, 7502, 10106, 10769, 11036, 14507, 15004, 19723, 20212, 21538, 29014, 30349, 39446, 43076, 55583, 58028, 60698, 78892, 111166, 121396, 159577, 222332, 319154, 333839, 449717, 611413, 638308, 667678, 899434, 1222826, 1335356, 1755347, 1798868, 2445652, 3510694, 4946887, 7021388, 9893774, 19787548, 54415757, 108831514, 217663028]

約数ペア:

[(1, 217663028), (2, 108831514), (4, 54415757), (11, 19787548), (22, 9893774), (31, 7021388), (44, 4946887), (62, 3510694), (89, 2445652), (121, 1798868), (124, 1755347), (163, 1335356), (178, 1222826), (242, 899434), (326, 667678), (341, 638308), (356, 611413), (484, 449717), (652, 333839), (682, 319154), (979, 222332), (1364, 159577), (1793, 121396), (1958, 111166), (2759, 78892), (3586, 60698), (3751, 58028), (3916, 55583), (5053, 43076), (5518, 39446), (7172, 30349), (7502, 29014), (10106, 21538), (10769, 20212), (11036, 19723), (14507, 15004)]