21972951

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1$

素因数の和:314

約数の個数: 80

約数和(自身を含む): 44233728

約数和(自身を除く): 22260777

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 39, 63, 77, 81, 91, 99, 117, 143, 189, 231, 271, 273, 297, 351, 429, 567, 693, 813, 819, 891, 1001, 1053, 1287, 1897, 2079, 2439, 2457, 2981, 3003, 3523, 3861, 5691, 6237, 7317, 7371, 8943, 9009, 10569, 11583, 17073, 20867, 21951, 24661, 26829, 27027, 31707, 38753, 51219, 62601, 73983, 80487, 81081, 95121, 116259, 153657, 187803, 221949, 241461, 271271, 285363, 348777, 563409, 665847, 813813, 1046331, 1690227, 1997541, 2441439, 3138993, 7324317, 21972951]

約数ペア:

[(1, 21972951), (3, 7324317), (7, 3138993), (9, 2441439), (11, 1997541), (13, 1690227), (21, 1046331), (27, 813813), (33, 665847), (39, 563409), (63, 348777), (77, 285363), (81, 271271), (91, 241461), (99, 221949), (117, 187803), (143, 153657), (189, 116259), (231, 95121), (271, 81081), (273, 80487), (297, 73983), (351, 62601), (429, 51219), (567, 38753), (693, 31707), (813, 27027), (819, 26829), (891, 24661), (1001, 21951), (1053, 20867), (1287, 17073), (1897, 11583), (2079, 10569), (2439, 9009), (2457, 8943), (2981, 7371), (3003, 7317), (3523, 6237), (3861, 5691)]