21495369

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 35458560

約数和(自身を除く): 13963191

約数列:

[1, 3, 7, 21, 31, 49, 53, 89, 93, 147, 159, 217, 267, 371, 623, 651, 1113, 1519, 1643, 1869, 2597, 2759, 4361, 4557, 4717, 4929, 7791, 8277, 11501, 13083, 14151, 19313, 33019, 34503, 57939, 80507, 99057, 135191, 146227, 231133, 241521, 405573, 438681, 693399, 1023589, 3070767, 7165123, 21495369]

約数ペア:

[(1, 21495369), (3, 7165123), (7, 3070767), (21, 1023589), (31, 693399), (49, 438681), (53, 405573), (89, 241521), (93, 231133), (147, 146227), (159, 135191), (217, 99057), (267, 80507), (371, 57939), (623, 34503), (651, 33019), (1113, 19313), (1519, 14151), (1643, 13083), (1869, 11501), (2597, 8277), (2759, 7791), (4361, 4929), (4557, 4717)]