201791821

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 267821568

約数和(自身を除く): 66029747

約数列:

[1, 7, 11, 37, 47, 77, 121, 137, 259, 329, 407, 517, 847, 959, 1507, 1739, 2849, 3619, 4477, 5069, 5687, 6439, 10549, 12173, 16577, 19129, 31339, 35483, 39809, 45073, 55759, 70829, 116039, 133903, 210419, 238243, 390313, 495803, 613349, 779119, 1472933, 1667701, 2620673, 4293443, 5453833, 18344711, 28827403, 201791821]

約数ペア:

[(1, 201791821), (7, 28827403), (11, 18344711), (37, 5453833), (47, 4293443), (77, 2620673), (121, 1667701), (137, 1472933), (259, 779119), (329, 613349), (407, 495803), (517, 390313), (847, 238243), (959, 210419), (1507, 133903), (1739, 116039), (2849, 70829), (3619, 55759), (4477, 45073), (5069, 39809), (5687, 35483), (6439, 31339), (10549, 19129), (12173, 16577)]