281478145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{433}}^1$

素因数の和:661

約数の個数: 32

約数和(自身を含む): 372288672

約数和(自身を除く): 90810527

約数列:

[1, 5, 13, 65, 73, 137, 365, 433, 685, 949, 1781, 2165, 4745, 5629, 8905, 10001, 28145, 31609, 50005, 59321, 130013, 158045, 296605, 410917, 650065, 771173, 2054585, 3855865, 4330433, 21652165, 56295629, 281478145]

約数ペア:

[(1, 281478145), (5, 56295629), (13, 21652165), (65, 4330433), (73, 3855865), (137, 2054585), (365, 771173), (433, 650065), (685, 410917), (949, 296605), (1781, 158045), (2165, 130013), (4745, 59321), (5629, 50005), (8905, 31609), (10001, 28145)]