21451365

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{719}}^1$

素因数の和:763

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 22094235

約数列:

[1, 3, 5, 9, 13, 15, 17, 27, 39, 45, 51, 65, 85, 117, 135, 153, 195, 221, 255, 351, 459, 585, 663, 719, 765, 1105, 1755, 1989, 2157, 2295, 3315, 3595, 5967, 6471, 9347, 9945, 10785, 12223, 19413, 28041, 29835, 32355, 36669, 46735, 61115, 84123, 97065, 110007, 140205, 158899, 183345, 252369, 330021, 420615, 476697, 550035, 794495, 1261845, 1430091, 1650105, 2383485, 4290273, 7150455, 21451365]

約数ペア:

[(1, 21451365), (3, 7150455), (5, 4290273), (9, 2383485), (13, 1650105), (15, 1430091), (17, 1261845), (27, 794495), (39, 550035), (45, 476697), (51, 420615), (65, 330021), (85, 252369), (117, 183345), (135, 158899), (153, 140205), (195, 110007), (221, 97065), (255, 84123), (351, 61115), (459, 46735), (585, 36669), (663, 32355), (719, 29835), (765, 28041), (1105, 19413), (1755, 12223), (1989, 10785), (2157, 9945), (2295, 9347), (3315, 6471), (3595, 5967)]