21917025

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 43330560

約数和(自身を除く): 21413535

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 59, 65, 75, 117, 127, 177, 195, 225, 295, 325, 381, 531, 585, 635, 767, 885, 975, 1143, 1475, 1651, 1905, 2301, 2655, 2925, 3175, 3835, 4425, 4953, 5715, 6903, 7493, 8255, 9525, 11505, 13275, 14859, 19175, 22479, 24765, 28575, 34515, 37465, 41275, 57525, 67437, 74295, 97409, 112395, 123825, 172575, 187325, 292227, 337185, 371475, 487045, 561975, 876681, 1461135, 1685925, 2435225, 4383405, 7305675, 21917025]

約数ペア:

[(1, 21917025), (3, 7305675), (5, 4383405), (9, 2435225), (13, 1685925), (15, 1461135), (25, 876681), (39, 561975), (45, 487045), (59, 371475), (65, 337185), (75, 292227), (117, 187325), (127, 172575), (177, 123825), (195, 112395), (225, 97409), (295, 74295), (325, 67437), (381, 57525), (531, 41275), (585, 37465), (635, 34515), (767, 28575), (885, 24765), (975, 22479), (1143, 19175), (1475, 14859), (1651, 13275), (1905, 11505), (2301, 9525), (2655, 8255), (2925, 7493), (3175, 6903), (3835, 5715), (4425, 4953)]