20550705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 41264640

約数和(自身を除く): 20713935

約数列:

[1, 3, 5, 7, 15, 17, 21, 29, 35, 51, 85, 87, 105, 119, 145, 203, 255, 357, 397, 435, 493, 595, 609, 1015, 1191, 1479, 1785, 1985, 2465, 2779, 3045, 3451, 5955, 6749, 7395, 8337, 10353, 11513, 13895, 17255, 20247, 33745, 34539, 41685, 47243, 51765, 57565, 80591, 101235, 141729, 172695, 195721, 236215, 241773, 402955, 587163, 708645, 978605, 1208865, 1370047, 2935815, 4110141, 6850235, 20550705]

約数ペア:

[(1, 20550705), (3, 6850235), (5, 4110141), (7, 2935815), (15, 1370047), (17, 1208865), (21, 978605), (29, 708645), (35, 587163), (51, 402955), (85, 241773), (87, 236215), (105, 195721), (119, 172695), (145, 141729), (203, 101235), (255, 80591), (357, 57565), (397, 51765), (435, 47243), (493, 41685), (595, 34539), (609, 33745), (1015, 20247), (1191, 17255), (1479, 13895), (1785, 11513), (1985, 10353), (2465, 8337), (2779, 7395), (3045, 6749), (3451, 5955)]