257702965

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{1291}}^1$

素因数の和:1429

約数の個数: 32

約数和(自身を含む): 346421376

約数和(自身を除く): 88718411

約数列:

[1, 5, 13, 37, 65, 83, 185, 415, 481, 1079, 1291, 2405, 3071, 5395, 6455, 15355, 16783, 39923, 47767, 83915, 107153, 199615, 238835, 535765, 620971, 1392989, 3104855, 3964661, 6964945, 19823305, 51540593, 257702965]

約数ペア:

[(1, 257702965), (5, 51540593), (13, 19823305), (37, 6964945), (65, 3964661), (83, 3104855), (185, 1392989), (415, 620971), (481, 535765), (1079, 238835), (1291, 199615), (2405, 107153), (3071, 83915), (5395, 47767), (6455, 39923), (15355, 16783)]