21436965

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 42491904

約数和(自身を除く): 21054939

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 121, 127, 155, 165, 279, 341, 363, 381, 465, 495, 605, 635, 1023, 1089, 1143, 1395, 1397, 1705, 1815, 1905, 3069, 3751, 3937, 4191, 5115, 5445, 5715, 6985, 11253, 11811, 12573, 15345, 15367, 18755, 19685, 20955, 33759, 35433, 43307, 46101, 56265, 59055, 62865, 76835, 129921, 138303, 168795, 177165, 216535, 230505, 389763, 476377, 649605, 691515, 1429131, 1948815, 2381885, 4287393, 7145655, 21436965]

約数ペア:

[(1, 21436965), (3, 7145655), (5, 4287393), (9, 2381885), (11, 1948815), (15, 1429131), (31, 691515), (33, 649605), (45, 476377), (55, 389763), (93, 230505), (99, 216535), (121, 177165), (127, 168795), (155, 138303), (165, 129921), (279, 76835), (341, 62865), (363, 59055), (381, 56265), (465, 46101), (495, 43307), (605, 35433), (635, 33759), (1023, 20955), (1089, 19685), (1143, 18755), (1395, 15367), (1397, 15345), (1705, 12573), (1815, 11811), (1905, 11253), (3069, 6985), (3751, 5715), (3937, 5445), (4191, 5115)]