28381535

素因数分解:

$5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:125

約数の個数: 64

約数和(自身を含む): 45696000

約数和(自身を除く): 17314465

約数列:

[1, 5, 7, 13, 19, 35, 49, 65, 67, 91, 95, 133, 245, 247, 335, 343, 455, 469, 637, 665, 871, 931, 1235, 1273, 1715, 1729, 2345, 3185, 3283, 4355, 4459, 4655, 6097, 6365, 6517, 8645, 8911, 12103, 16415, 16549, 22295, 22981, 30485, 32585, 42679, 44555, 60515, 62377, 82745, 84721, 114905, 115843, 213395, 298753, 311885, 423605, 436639, 579215, 810901, 1493765, 2183195, 4054505, 5676307, 28381535]

約数ペア:

[(1, 28381535), (5, 5676307), (7, 4054505), (13, 2183195), (19, 1493765), (35, 810901), (49, 579215), (65, 436639), (67, 423605), (91, 311885), (95, 298753), (133, 213395), (245, 115843), (247, 114905), (335, 84721), (343, 82745), (455, 62377), (469, 60515), (637, 44555), (665, 42679), (871, 32585), (931, 30485), (1235, 22981), (1273, 22295), (1715, 16549), (1729, 16415), (2345, 12103), (3185, 8911), (3283, 8645), (4355, 6517), (4459, 6365), (4655, 6097)]