21320145

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{293}}^1$

素因数の和:332

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 26942895

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 49, 55, 63, 77, 99, 105, 135, 147, 165, 189, 231, 245, 293, 297, 315, 385, 441, 495, 539, 693, 735, 879, 945, 1155, 1323, 1465, 1485, 1617, 2051, 2079, 2205, 2637, 2695, 3223, 3465, 4395, 4851, 6153, 6615, 7911, 8085, 9669, 10255, 10395, 13185, 14357, 14553, 16115, 18459, 22561, 24255, 29007, 30765, 39555, 43071, 48345, 55377, 67683, 71785, 72765, 87021, 92295, 112805, 129213, 145035, 157927, 203049, 215355, 276885, 338415, 387639, 435105, 473781, 609147, 646065, 789635, 1015245, 1421343, 1938195, 2368905, 3045735, 4264029, 7106715, 21320145]

約数ペア:

[(1, 21320145), (3, 7106715), (5, 4264029), (7, 3045735), (9, 2368905), (11, 1938195), (15, 1421343), (21, 1015245), (27, 789635), (33, 646065), (35, 609147), (45, 473781), (49, 435105), (55, 387639), (63, 338415), (77, 276885), (99, 215355), (105, 203049), (135, 157927), (147, 145035), (165, 129213), (189, 112805), (231, 92295), (245, 87021), (293, 72765), (297, 71785), (315, 67683), (385, 55377), (441, 48345), (495, 43071), (539, 39555), (693, 30765), (735, 29007), (879, 24255), (945, 22561), (1155, 18459), (1323, 16115), (1465, 14553), (1485, 14357), (1617, 13185), (2051, 10395), (2079, 10255), (2205, 9669), (2637, 8085), (2695, 7911), (3223, 6615), (3465, 6153), (4395, 4851)]