21725018

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 42301440

約数和(自身を除く): 20576422

約数列:

[1, 2, 7, 14, 19, 23, 38, 46, 53, 67, 106, 133, 134, 161, 266, 322, 371, 437, 469, 742, 874, 938, 1007, 1219, 1273, 1541, 2014, 2438, 2546, 3059, 3082, 3551, 6118, 7049, 7102, 8533, 8911, 10787, 14098, 17066, 17822, 21574, 23161, 24857, 29279, 46322, 49714, 58558, 67469, 81673, 134938, 162127, 163346, 204953, 324254, 409906, 472283, 571711, 944566, 1143422, 1551787, 3103574, 10862509, 21725018]

約数ペア:

[(1, 21725018), (2, 10862509), (7, 3103574), (14, 1551787), (19, 1143422), (23, 944566), (38, 571711), (46, 472283), (53, 409906), (67, 324254), (106, 204953), (133, 163346), (134, 162127), (161, 134938), (266, 81673), (322, 67469), (371, 58558), (437, 49714), (469, 46322), (742, 29279), (874, 24857), (938, 23161), (1007, 21574), (1219, 17822), (1273, 17066), (1541, 14098), (2014, 10787), (2438, 8911), (2546, 8533), (3059, 7102), (3082, 7049), (3551, 6118)]