1997940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 6580224

約数和(自身を除く): 4582284

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 67, 70, 71, 84, 105, 134, 140, 142, 201, 210, 213, 268, 284, 335, 355, 402, 420, 426, 469, 497, 670, 710, 804, 852, 938, 994, 1005, 1065, 1340, 1407, 1420, 1491, 1876, 1988, 2010, 2130, 2345, 2485, 2814, 2982, 4020, 4260, 4690, 4757, 4970, 5628, 5964, 7035, 7455, 9380, 9514, 9940, 14070, 14271, 14910, 19028, 23785, 28140, 28542, 29820, 33299, 47570, 57084, 66598, 71355, 95140, 99897, 133196, 142710, 166495, 199794, 285420, 332990, 399588, 499485, 665980, 998970, 1997940]

約数ペア:

[(1, 1997940), (2, 998970), (3, 665980), (4, 499485), (5, 399588), (6, 332990), (7, 285420), (10, 199794), (12, 166495), (14, 142710), (15, 133196), (20, 99897), (21, 95140), (28, 71355), (30, 66598), (35, 57084), (42, 47570), (60, 33299), (67, 29820), (70, 28542), (71, 28140), (84, 23785), (105, 19028), (134, 14910), (140, 14271), (142, 14070), (201, 9940), (210, 9514), (213, 9380), (268, 7455), (284, 7035), (335, 5964), (355, 5628), (402, 4970), (420, 4757), (426, 4690), (469, 4260), (497, 4020), (670, 2982), (710, 2814), (804, 2485), (852, 2345), (938, 2130), (994, 2010), (1005, 1988), (1065, 1876), (1340, 1491), (1407, 1420)]