21201465

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:162

約数の個数: 64

約数和(自身を含む): 38568960

約数和(自身を除く): 17367495

約数列:

[1, 3, 5, 15, 17, 29, 47, 51, 61, 85, 87, 141, 145, 183, 235, 255, 305, 435, 493, 705, 799, 915, 1037, 1363, 1479, 1769, 2397, 2465, 2867, 3111, 3995, 4089, 5185, 5307, 6815, 7395, 8601, 8845, 11985, 14335, 15555, 20445, 23171, 26535, 30073, 43005, 48739, 69513, 83143, 90219, 115855, 146217, 150365, 243695, 249429, 347565, 415715, 451095, 731085, 1247145, 1413431, 4240293, 7067155, 21201465]

約数ペア:

[(1, 21201465), (3, 7067155), (5, 4240293), (15, 1413431), (17, 1247145), (29, 731085), (47, 451095), (51, 415715), (61, 347565), (85, 249429), (87, 243695), (141, 150365), (145, 146217), (183, 115855), (235, 90219), (255, 83143), (305, 69513), (435, 48739), (493, 43005), (705, 30073), (799, 26535), (915, 23171), (1037, 20445), (1363, 15555), (1479, 14335), (1769, 11985), (2397, 8845), (2465, 8601), (2867, 7395), (3111, 6815), (3995, 5307), (4089, 5185)]