21323295

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 42631680

約数和(自身を除く): 21308385

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 139, 315, 417, 487, 695, 973, 1251, 1461, 2085, 2435, 2919, 3409, 4383, 4865, 6255, 7305, 8757, 10227, 14595, 17045, 21915, 30681, 43785, 51135, 67693, 153405, 203079, 338465, 473851, 609237, 1015395, 1421553, 2369255, 3046185, 4264659, 7107765, 21323295]

約数ペア:

[(1, 21323295), (3, 7107765), (5, 4264659), (7, 3046185), (9, 2369255), (15, 1421553), (21, 1015395), (35, 609237), (45, 473851), (63, 338465), (105, 203079), (139, 153405), (315, 67693), (417, 51135), (487, 43785), (695, 30681), (973, 21915), (1251, 17045), (1461, 14595), (2085, 10227), (2435, 8757), (2919, 7305), (3409, 6255), (4383, 4865)]