21411775

素因数分解:

$5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{227}}^1$

素因数の和:269

約数の個数: 48

約数和(自身を含む): 33926400

約数和(自身を除く): 12514625

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 175, 227, 245, 275, 343, 385, 539, 1135, 1225, 1589, 1715, 1925, 2497, 2695, 3773, 5675, 7945, 8575, 11123, 12485, 13475, 17479, 18865, 39725, 55615, 62425, 77861, 87395, 94325, 122353, 278075, 389305, 436975, 611765, 856471, 1946525, 3058825, 4282355, 21411775]

約数ペア:

[(1, 21411775), (5, 4282355), (7, 3058825), (11, 1946525), (25, 856471), (35, 611765), (49, 436975), (55, 389305), (77, 278075), (175, 122353), (227, 94325), (245, 87395), (275, 77861), (343, 62425), (385, 55615), (539, 39725), (1135, 18865), (1225, 17479), (1589, 13475), (1715, 12485), (1925, 11123), (2497, 8575), (2695, 7945), (3773, 5675)]