20409869991

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{907}}^1\times {\mathrm{3257}}^1$

素因数の和:4228

約数の個数: 48

約数和(自身を含む): 32375241216

約数和(自身を除く): 11965371225

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 907, 987, 2303, 2721, 3257, 6349, 6909, 9771, 19047, 22799, 42629, 44443, 68397, 127887, 133329, 153079, 159593, 298403, 459237, 478779, 895209, 1071553, 2088821, 2954099, 3214659, 6266463, 7500871, 8862297, 20678693, 22502613, 62036079, 138842653, 144750851, 416527959, 434252553, 971898571, 2915695713, 6803289997, 20409869991]

約数ペア:

[(1, 20409869991), (3, 6803289997), (7, 2915695713), (21, 971898571), (47, 434252553), (49, 416527959), (141, 144750851), (147, 138842653), (329, 62036079), (907, 22502613), (987, 20678693), (2303, 8862297), (2721, 7500871), (3257, 6266463), (6349, 3214659), (6909, 2954099), (9771, 2088821), (19047, 1071553), (22799, 895209), (42629, 478779), (44443, 459237), (68397, 298403), (127887, 159593), (133329, 153079)]