21387492

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{84871}}^1$

素因数の和:84888

約数の個数: 36

約数和(自身を含む): 61786816

約数和(自身を除く): 40399324

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 84871, 169742, 254613, 339484, 509226, 594097, 763839, 1018452, 1188194, 1527678, 1782291, 2376388, 3055356, 3564582, 5346873, 7129164, 10693746, 21387492]

約数ペア:

[(1, 21387492), (2, 10693746), (3, 7129164), (4, 5346873), (6, 3564582), (7, 3055356), (9, 2376388), (12, 1782291), (14, 1527678), (18, 1188194), (21, 1018452), (28, 763839), (36, 594097), (42, 509226), (63, 339484), (84, 254613), (126, 169742), (252, 84871)]