28775747

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 14769853

約数列:

[1, 7, 11, 13, 17, 19, 77, 89, 91, 119, 133, 143, 187, 209, 221, 247, 323, 623, 979, 1001, 1157, 1309, 1463, 1513, 1547, 1691, 1729, 2261, 2431, 2717, 3553, 4199, 6853, 8099, 10591, 11837, 12727, 16643, 17017, 18601, 19019, 19669, 21983, 24871, 28747, 29393, 46189, 89089, 116501, 130207, 137683, 153881, 201229, 216359, 241813, 316217, 323323, 373711, 1514513, 1692691, 2213519, 2615977, 4110821, 28775747]

約数ペア:

[(1, 28775747), (7, 4110821), (11, 2615977), (13, 2213519), (17, 1692691), (19, 1514513), (77, 373711), (89, 323323), (91, 316217), (119, 241813), (133, 216359), (143, 201229), (187, 153881), (209, 137683), (221, 130207), (247, 116501), (323, 89089), (623, 46189), (979, 29393), (1001, 28747), (1157, 24871), (1309, 21983), (1463, 19669), (1513, 19019), (1547, 18601), (1691, 17017), (1729, 16643), (2261, 12727), (2431, 11837), (2717, 10591), (3553, 8099), (4199, 6853)]