21439215

素因数分解:

$3^3\times 5^1\times 7^3\times {\mathrm{463}}^1$

素因数の和:498

約数の個数: 64

約数和(自身を含む): 44544000

約数和(自身を除く): 23104785

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 105, 135, 147, 189, 245, 315, 343, 441, 463, 735, 945, 1029, 1323, 1389, 1715, 2205, 2315, 3087, 3241, 4167, 5145, 6615, 6945, 9261, 9723, 12501, 15435, 16205, 20835, 22687, 29169, 46305, 48615, 62505, 68061, 87507, 113435, 145845, 158809, 204183, 340305, 437535, 476427, 612549, 794045, 1020915, 1429281, 2382135, 3062745, 4287843, 7146405, 21439215]

約数ペア:

[(1, 21439215), (3, 7146405), (5, 4287843), (7, 3062745), (9, 2382135), (15, 1429281), (21, 1020915), (27, 794045), (35, 612549), (45, 476427), (49, 437535), (63, 340305), (105, 204183), (135, 158809), (147, 145845), (189, 113435), (245, 87507), (315, 68061), (343, 62505), (441, 48615), (463, 46305), (735, 29169), (945, 22687), (1029, 20835), (1323, 16205), (1389, 15435), (1715, 12501), (2205, 9723), (2315, 9261), (3087, 6945), (3241, 6615), (4167, 5145)]