21301527

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 48

約数和(自身を含む): 34564320

約数和(自身を除く): 13262793

約数列:

[1, 3, 13, 17, 19, 39, 51, 57, 89, 221, 247, 267, 323, 361, 663, 741, 969, 1083, 1157, 1513, 1691, 3471, 4199, 4539, 4693, 5073, 6137, 12597, 14079, 18411, 19669, 21983, 28747, 32129, 59007, 65949, 79781, 86241, 96387, 239343, 373711, 417677, 546193, 1121133, 1253031, 1638579, 7100509, 21301527]

約数ペア:

[(1, 21301527), (3, 7100509), (13, 1638579), (17, 1253031), (19, 1121133), (39, 546193), (51, 417677), (57, 373711), (89, 239343), (221, 96387), (247, 86241), (267, 79781), (323, 65949), (361, 59007), (663, 32129), (741, 28747), (969, 21983), (1083, 19669), (1157, 18411), (1513, 14079), (1691, 12597), (3471, 6137), (4199, 5073), (4539, 4693)]