21682213695

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^2\times {\mathrm{947}}^1$

素因数の和:1321

約数の個数: 72

約数和(自身を含む): 40066852176

約数和(自身を除く): 18384638481

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 173, 255, 519, 765, 865, 947, 1557, 2595, 2841, 2941, 4735, 7785, 8523, 8823, 14205, 14705, 16099, 26469, 29929, 42615, 44115, 48297, 80495, 89787, 132345, 144891, 149645, 163831, 241485, 269361, 448935, 491493, 508793, 724455, 819155, 1346805, 1474479, 1526379, 2457465, 2543965, 2785127, 4579137, 7372395, 7631895, 8355381, 13925635, 22895685, 25066143, 28342763, 41776905, 85028289, 125330715, 141713815, 255084867, 425141445, 481826971, 1275424335, 1445480913, 2409134855, 4336442739, 7227404565, 21682213695]

約数ペア:

[(1, 21682213695), (3, 7227404565), (5, 4336442739), (9, 2409134855), (15, 1445480913), (17, 1275424335), (45, 481826971), (51, 425141445), (85, 255084867), (153, 141713815), (173, 125330715), (255, 85028289), (519, 41776905), (765, 28342763), (865, 25066143), (947, 22895685), (1557, 13925635), (2595, 8355381), (2841, 7631895), (2941, 7372395), (4735, 4579137), (7785, 2785127), (8523, 2543965), (8823, 2457465), (14205, 1526379), (14705, 1474479), (16099, 1346805), (26469, 819155), (29929, 724455), (42615, 508793), (44115, 491493), (48297, 448935), (80495, 269361), (89787, 241485), (132345, 163831), (144891, 149645)]