18744775

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 28283904

約数和(自身を除く): 9539129

約数列:

[1, 5, 7, 25, 35, 43, 47, 53, 175, 215, 235, 265, 301, 329, 371, 1075, 1175, 1325, 1505, 1645, 1855, 2021, 2279, 2491, 7525, 8225, 9275, 10105, 11395, 12455, 14147, 15953, 17437, 50525, 56975, 62275, 70735, 79765, 87185, 107113, 353675, 398825, 435925, 535565, 749791, 2677825, 3748955, 18744775]

約数ペア:

[(1, 18744775), (5, 3748955), (7, 2677825), (25, 749791), (35, 535565), (43, 435925), (47, 398825), (53, 353675), (175, 107113), (215, 87185), (235, 79765), (265, 70735), (301, 62275), (329, 56975), (371, 50525), (1075, 17437), (1175, 15953), (1325, 14147), (1505, 12455), (1645, 11395), (1855, 10105), (2021, 9275), (2279, 8225), (2491, 7525)]