21449890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:427

約数の個数: 64

約数和(自身を含む): 48833280

約数和(自身を除く): 27383390

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 89, 110, 154, 178, 313, 385, 445, 623, 626, 770, 890, 979, 1246, 1565, 1958, 2191, 3115, 3130, 3443, 4382, 4895, 6230, 6853, 6886, 9790, 10955, 13706, 17215, 21910, 24101, 27857, 34265, 34430, 48202, 55714, 68530, 120505, 139285, 194999, 241010, 278570, 306427, 389998, 612854, 974995, 1532135, 1949990, 2144989, 3064270, 4289978, 10724945, 21449890]

約数ペア:

[(1, 21449890), (2, 10724945), (5, 4289978), (7, 3064270), (10, 2144989), (11, 1949990), (14, 1532135), (22, 974995), (35, 612854), (55, 389998), (70, 306427), (77, 278570), (89, 241010), (110, 194999), (154, 139285), (178, 120505), (313, 68530), (385, 55714), (445, 48202), (623, 34430), (626, 34265), (770, 27857), (890, 24101), (979, 21910), (1246, 17215), (1565, 13706), (1958, 10955), (2191, 9790), (3115, 6886), (3130, 6853), (3443, 6230), (4382, 4895)]