28457975

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1787}}^1$

素因数の和:1824

約数の個数: 36

約数和(自身を含む): 44231544

約数和(自身を除く): 15773569

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 91, 175, 245, 325, 455, 637, 1225, 1787, 2275, 3185, 8935, 12509, 15925, 23231, 44675, 62545, 87563, 116155, 162617, 312725, 437815, 580775, 813085, 1138319, 2189075, 4065425, 5691595, 28457975]

約数ペア:

[(1, 28457975), (5, 5691595), (7, 4065425), (13, 2189075), (25, 1138319), (35, 813085), (49, 580775), (65, 437815), (91, 312725), (175, 162617), (245, 116155), (325, 87563), (455, 62545), (637, 44675), (1225, 23231), (1787, 15925), (2275, 12509), (3185, 8935)]