131861565

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 255988824

約数和(自身を除く): 124127259

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 61, 99, 121, 165, 183, 305, 363, 397, 495, 549, 605, 671, 915, 1089, 1191, 1815, 1985, 2013, 2745, 3355, 3573, 4367, 5445, 5955, 6039, 7381, 10065, 13101, 17865, 21835, 22143, 24217, 30195, 36905, 39303, 48037, 65505, 66429, 72651, 110715, 121085, 144111, 196515, 217953, 240185, 266387, 332145, 363255, 432333, 720555, 799161, 1089765, 1331935, 2161665, 2397483, 2930257, 3995805, 8790771, 11987415, 14651285, 26372313, 43953855, 131861565]

約数ペア:

[(1, 131861565), (3, 43953855), (5, 26372313), (9, 14651285), (11, 11987415), (15, 8790771), (33, 3995805), (45, 2930257), (55, 2397483), (61, 2161665), (99, 1331935), (121, 1089765), (165, 799161), (183, 720555), (305, 432333), (363, 363255), (397, 332145), (495, 266387), (549, 240185), (605, 217953), (671, 196515), (915, 144111), (1089, 121085), (1191, 110715), (1815, 72651), (1985, 66429), (2013, 65505), (2745, 48037), (3355, 39303), (3573, 36905), (4367, 30195), (5445, 24217), (5955, 22143), (6039, 21835), (7381, 17865), (10065, 13101)]