21771315

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{83}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 41126400

約数和(自身を除く): 19355085

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 67, 83, 87, 135, 145, 201, 249, 261, 335, 415, 435, 603, 747, 783, 1005, 1245, 1305, 1809, 1943, 2241, 2407, 3015, 3735, 3915, 5561, 5829, 7221, 9045, 9715, 11205, 12035, 16683, 17487, 21663, 27805, 29145, 36105, 50049, 52461, 64989, 83415, 87435, 108315, 150147, 161269, 250245, 262305, 324945, 483807, 750735, 806345, 1451421, 2419035, 4354263, 7257105, 21771315]

約数ペア:

[(1, 21771315), (3, 7257105), (5, 4354263), (9, 2419035), (15, 1451421), (27, 806345), (29, 750735), (45, 483807), (67, 324945), (83, 262305), (87, 250245), (135, 161269), (145, 150147), (201, 108315), (249, 87435), (261, 83415), (335, 64989), (415, 52461), (435, 50049), (603, 36105), (747, 29145), (783, 27805), (1005, 21663), (1245, 17487), (1305, 16683), (1809, 12035), (1943, 11205), (2241, 9715), (2407, 9045), (3015, 7221), (3735, 5829), (3915, 5561)]