21423276

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{563}}^1$

素因数の和:731

約数の個数: 72

約数和(自身を含む): 62409984

約数和(自身を除く): 40986708

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 151, 252, 302, 453, 563, 604, 906, 1057, 1126, 1359, 1689, 1812, 2114, 2252, 2718, 3171, 3378, 3941, 4228, 5067, 5436, 6342, 6756, 7882, 9513, 10134, 11823, 12684, 15764, 19026, 20268, 23646, 35469, 38052, 47292, 70938, 85013, 141876, 170026, 255039, 340052, 510078, 595091, 765117, 1020156, 1190182, 1530234, 1785273, 2380364, 3060468, 3570546, 5355819, 7141092, 10711638, 21423276]

約数ペア:

[(1, 21423276), (2, 10711638), (3, 7141092), (4, 5355819), (6, 3570546), (7, 3060468), (9, 2380364), (12, 1785273), (14, 1530234), (18, 1190182), (21, 1020156), (28, 765117), (36, 595091), (42, 510078), (63, 340052), (84, 255039), (126, 170026), (151, 141876), (252, 85013), (302, 70938), (453, 47292), (563, 38052), (604, 35469), (906, 23646), (1057, 20268), (1126, 19026), (1359, 15764), (1689, 12684), (1812, 11823), (2114, 10134), (2252, 9513), (2718, 7882), (3171, 6756), (3378, 6342), (3941, 5436), (4228, 5067)]