21569009

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{641}}^1$

素因数の和:701

約数の個数: 32

約数和(自身を含む): 29583360

約数和(自身を除く): 8014351

約数列:

[1, 7, 11, 19, 23, 77, 133, 161, 209, 253, 437, 641, 1463, 1771, 3059, 4487, 4807, 7051, 12179, 14743, 33649, 49357, 85253, 103201, 133969, 162173, 280117, 937783, 1135211, 1960819, 3081287, 21569009]

約数ペア:

[(1, 21569009), (7, 3081287), (11, 1960819), (19, 1135211), (23, 937783), (77, 280117), (133, 162173), (161, 133969), (209, 103201), (253, 85253), (437, 49357), (641, 33649), (1463, 14743), (1771, 12179), (3059, 7051), (4487, 4807)]